IOWA

                                     (first line) AVERAGE MONTHLY EXTREME MINIMUM TEMPERATURES (F)
                                   (second line) ALL-TIME MONTHLY EXTREME MINIMUM TEMPERATURES (F)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

ALBIA 3 NNE               | 1948-2010 |   -10    -5     7    24    36    47    53    50    37    26    12    -3     -14
ALBIA 3 NNE               | 1948-2010 |   -24   -31   -15    10    26    40    45    40    28    16    -8   -26     -31

ALBIA PASTURE IMP FARM    | 1956-1972 |   -15    -7     6    24    35    47    52    49    38    26    10    -3     -16
ALBIA PASTURE IMP FARM    | 1956-1972 |   -22   -24   -18    17    30    41    47    40    31    19   -12   -18     -24

ALGONA 3 W                | 1893-2010 |   -17   -13     1    21    32    44    51    47    34    23     5   -11     -20
ALGONA 3 W                | 1893-2010 |   -35   -36   -25     6    21    35    42    37    22     3   -17   -30     -36

ALLERTON                  | 1948-2010 |    -8    -2     5    24    36    48    54    53    39    25    14    -3     -13
ALLERTON                  | 1948-2010 |   -21   -15   -13    16    29    40    49    46    33    17     5   -12     -21

ALLISON                   | 1948-2010 |   -15   -10     2    21    33    46    51    48    35    24     8    -9     -19
ALLISON                   | 1948-2010 |   -28   -31   -20     5    25    39    43    37    27    15   -16   -22     -31

ALTA                      | 1948-1959 |   -16   -10     2    19    32    44    51    49    37    23     6    -6     -18
ALTA                      | 1948-1959 |   -21   -19    -7    12    25    40    45    39    28    15    -5   -16     -21

AMES 8 WSW                | 1964-2010 |   -13    -9     5    22    34    47    52    50    36    24     9    -7     -17
AMES 8 WSW                | 1964-2010 |   -26   -28   -11     8    27    38    44    40    29    13    -7   -24     -28

AMES 5 SE                 | 1978-2010 |   -12    -7     5    23    34    47    52    50    35    24    12    -6     -17
AMES 5 SE                 | 1978-2010 |   -33   -28    -8    13    25    42    47    44    29    15     2   -18     -33

AMES 3 SW                 | 1893-1964 |   -15   -11     3    22    32    44    50    47    33    22     7    -8     -19
AMES 3 SW                 | 1893-1964 |   -37   -31   -25     7     5    36    39    36    22    -7    -8   -24     -37

ANAMOSA 1 NW              | 1948-2010 |   -16   -11     3    19    31    41    48    45    32    22     8    -9     -21
ANAMOSA 1 NW              | 1948-2010 |   -37   -37   -22     0    22    33    39    37    23    10   -14   -27     -37

ANKENY                    | 1950-2010 |   -13    -8     6    22    35    46    52    49    35    24     9    -6     -17
ANKENY                    | 1950-2010 |   -28   -34   -23     8    26    40    43    39    22    12    -7   -25     -34

ATLANTIC 1 NE             | 1893-2010 |   -15   -11     3    20    31    43    49    45    31    20     6    -9     -20
ATLANTIC 1 NE             | 1893-2010 |   -37   -36   -32     4    17    32    37    33    17     1   -16   -33     -37

AUDUBON 1 SSE             | 1948-2010 |   -15   -10     3    20    32    44    50    47    33    21     7    -7     -19
AUDUBON 1 SSE             | 1948-2010 |   -28   -29   -23     5    23    39    41    39    26    10   -12   -29     -29

BEACONSFIELD 2 N          | 1956-2010 |   -12    -5     7    23    36    47    54    50    37    25    11    -4     -15
BEACONSFIELD 2 N          | 1956-2010 |   -24   -25   -18     8    25    36    43    41    25    14   -15   -30     -30

BEDFORD                   | 1948-2010 |   -11    -6     7    22    35    47    53    50    36    24    11    -4     -16
BEDFORD                   | 1948-2010 |   -32   -34   -24     5    27    38    40    38    26    11   -11   -26     -34

BELLE PLAINE              | 1948-2010 |   -14   -10     5    21    33    45    51    48    34    23     9    -7     -18
BELLE PLAINE              | 1948-2010 |   -38   -35   -23     8    22    38    43    36    26    11   -10   -30     -38

BELLEVUE LOCK & DAM 12    | 1948-2010 |   -13    -8     5    22    33    44    50    48    35    25    11    -6     -17
BELLEVUE LOCK & DAM 12    | 1948-2010 |   -35   -34   -21     5    23    35    41    36    26    14    -9   -26     -35

BLOOMFIELD 1 WNW          | 1948-2010 |   -10    -5     8    24    36    48    53    50    37    26    12    -3     -14
BLOOMFIELD 1 WNW          | 1948-2010 |   -29   -26   -19    10    26    36    43    40    29    14   -11   -23     -29

BOONE                     | 1948-2010 |   -16   -10     4    21    33    44    51    48    34    23     8    -8     -19
BOONE                     | 1948-2010 |   -32   -35   -22    -1    25    35    41    37    23    14   -11   -25     -35

BRITT                     | 1948-2010 |   -18   -13    -0    20    32    44    50    46    34    22     5   -11     -20
BRITT                     | 1948-2010 |   -31   -30   -25     5    22    35    41    30    22    11   -16   -27     -31

BURLINGTON RADIO KBUR     | 1965-2010 |    -8    -3    11    26    38    49    55    53    39    28    15    -1     -12
BURLINGTON RADIO KBUR     | 1965-2010 |   -23   -26    -6    11    29    40    46    42    30    18    -2   -20     -26

BURLINGTON AIRPORT        | 1948-2010 |    -6    -2    10    25    37    49    54    52    38    27    14    -2     -11
BURLINGTON AIRPORT        | 1948-2010 |   -24   -26   -13    18    28    41    48    41    31    18    -2   -22     -26

CARROLL                   | 1948-2010 |   -15   -11     2    20    32    43    49    46    32    21     7    -8     -19
CARROLL                   | 1948-2010 |   -30   -31   -28     4    20    33    39    35    24     9   -10   -24     -31

CASCADE                   | 1948-2010 |   -16   -11     4    20    32    43    49    45    33    22     9    -9     -20
CASCADE                   | 1948-2010 |   -35   -33   -26    -3    20    35    42    35    21    10   -14   -28     -35

CASTANA EXPERIMENT FARM   | 1948-2010 |   -14    -8     4    21    34    45    52    49    36    23     8    -7     -18
CASTANA EXPERIMENT FARM   | 1948-2010 |   -27   -26   -23     4    24    38    44    38    24    12    -9   -26     -27

CEDAR RAPIDS AP           | 1953-2010 |   -13    -8     7    22    34    47    52    49    36    25    10    -7     -17
CEDAR RAPIDS AP           | 1953-2010 |   -29   -21   -20     1    25    39    46    40    27    18   -11   -22     -29

CEDAR RAPIDS NO 1         | 1895-2010 |   -12    -8     6    23    34    45    51    48    36    24    10    -6     -16
CEDAR RAPIDS NO 1         | 1895-2010 |   -33   -28   -17     3    24    36    42    37    22    -2   -10   -28     -33

CENTERVILLE               | 1948-2010 |    -9    -4     8    24    36    48    54    51    38    27    12    -2     -14
CENTERVILLE               | 1948-2010 |   -25   -24   -16    12    27    40    45    40    29    17   -11   -23     -25

CHARITON 1 E              | 1948-2010 |   -14    -9     5    20    32    43    50    47    33    22     9    -6     -19
CHARITON 1 E              | 1948-2010 |   -28   -38   -32     8    24    34    39    35    23    11   -13   -31     -38

CHARLES CITY              | 1948-2010 |   -17   -12     1    21    33    44    50    47    33    23     7   -11     -21
CHARLES CITY              | 1948-2010 |   -34   -32   -32     3    21    36    44    38    25    10   -14   -29     -34

CHEROKEE 2 S              | 1948-2010 |   -19   -14     1    18    31    42    48    46    32    20     5   -11     -23
CHEROKEE 2 S              | 1948-2010 |   -35   -33   -23    -8    21    34    40    34    24     9   -17   -26     -35

CLARINDA                  | 1893-2010 |   -11    -7     6    22    34    46    52    49    35    23     9    -6     -16
CLARINDA                  | 1893-2010 |   -31   -29   -24     6    21    36    42    36    24    -1   -10   -27     -31

CLARION                   | 1948-2010 |   -18   -13     1    20    31    44    50    45    33    21     6   -12     -22
CLARION                   | 1948-2010 |   -32   -30   -25     3    21    36    42    32    21    12   -18   -26     -32

CLINTON 1                 | 1948-2010 |   -11    -6     8    23    35    46    52    50    36    25    12    -5     -15
CLINTON 1                 | 1948-2010 |   -27   -29   -14     7    24    38    45    39    27    15    -8   -27     -29

COLO                      | 1964-2009 |   -13    -9     5    21    34    46    52    49    35    23     8    -7     -17
COLO                      | 1964-2009 |   -28   -28   -15     4    24    36    43    40    26    11   -10   -23     -28

COLUMBUS JUNCT 2 SSW      | 1948-2008 |   -11    -6     7    23    35    46    52    49    36    25    11    -5     -15
COLUMBUS JUNCT 2 SSW      | 1948-2008 |   -25   -30   -17     8    25    38    43    39    27    10    -8   -24     -30

CORNING                   | 1896-2010 |   -12    -7     5    21    33    45    51    48    35    23     9    -6     -16
CORNING                   | 1896-2010 |   -32   -32   -22     3    21    34    42    34    20    -3   -14   -32     -32

CORYDON 8 W               | 1950-1991 |   -11    -5     8    23    36    47    54    50    38    26    10    -4     -15
CORYDON 8 W               | 1950-1991 |   -24   -21   -16     8    30    40    45    38    30    16    -8   -24     -24

COUNCIL BLUFFS 5 NE       | 1948-1965 |   -16    -9     2    21    32    44    50    46    32    20     6    -8     -19
COUNCIL BLUFFS 5 NE       | 1948-1965 |   -22   -25   -25    14    22    38    44    36    25    10   -13   -20     -25

CRESCO 1 NE               | 1948-2010 |   -19   -15    -1    18    30    42    48    45    33    22     5   -13     -23
CRESCO 1 NE               | 1948-2010 |   -35   -36   -29    -1    21    34    40    34    24    10   -16   -30     -36

CRESTON 2 SW              | 1948-2010 |   -12    -6     6    21    35    46    52    49    36    24     9    -6     -16
CRESTON 2 SW              | 1948-2010 |   -23   -26   -20     7    27    38    40    39    24    13   -18   -26     -26

DAKOTA CITY               | 1948-1956 |   -17    -9     0    20    34    43    50    47    34    21     7    -8     -17
DAKOTA CITY               | 1948-1956 |   -23   -19    -6    12    28    41    48    37    27    17    -7   -18     -23

DAVENPORT LOCK & DAM 15   | 1948-1984 |    -9    -3    10    27    38    49    57    54    42    30    14    -0     -12
DAVENPORT LOCK & DAM 15   | 1948-1984 |   -22   -17   -13    11    31    37    50    45    35    23    -4   -17     -22

DECORAH                   | 1948-2010 |   -20   -14    -0    19    31    42    48    45    32    21     7   -12     -24
DECORAH                   | 1948-2010 |   -43   -41   -33     5    20    33    41    35    21    10   -16   -36     -43

DELAWARE 3 WSW            | 1893-1975 |   -17   -13     1    20    31    42    49    45    33    22     7   -11     -21
DELAWARE 3 WSW            | 1893-1975 |   -30   -31   -32     3    22    35    40    35    16    11   -10   -28     -32

DENISON                   | 1900-2010 |   -15   -10     3    21    32    44    51    48    34    22     7    -8     -19
DENISON                   | 1900-2010 |   -40   -37   -23     5     2    30    39    34    21    -1   -16   -26     -40

DES MOINES WSFO ARPT      | 1948-2010 |   -11    -5     8    24    37    49    56    52    38    26    11    -4     -14
DES MOINES WSFO ARPT      | 1948-2010 |   -24   -26   -22     9    30    41    47    40    28    14    -4   -22     -26

DES MOINES 17 E (CRN)     | 2004-2010 |   -11    -7     8    24    34    51    54    52    36    26    14    -4     -14
DES MOINES 17 E (CRN)     | 2004-2010 |   -22   -12    -2    15    28    48    52    46    32    21     6   -10     -22

DES MOINES WSO CITY       | 1948-1973 |   -11    -4     9    26    38    50    57    53    40    28    13    -2     -13
DES MOINES WSO CITY       | 1948-1973 |   -21   -17   -19    18    32    43    50    42    33    19    -1   -13     -21

DES MOINES WSFO           | 1995-2010 |   -11    -6     6    23    37    49    54    53    37    25    13    -4     -14
DES MOINES WSFO           | 1995-2010 |   -23   -27    -8    14    28    41    49    46    30    16     2   -16     -27

DUBUQUE LOCK & DAM 11     | 1948-2010 |   -13    -8     6    26    38    49    55    53    40    29    14    -5     -17
DUBUQUE LOCK & DAM 11     | 1948-2010 |   -31   -32   -32    11    29    42    46    43    29    19    -8   -30     -32

DUBUQUE WSO AP            | 1951-2010 |   -14    -8     6    22    33    45    51    49    36    25    10    -8     -18
DUBUQUE WSO AP            | 1951-2010 |   -30   -27   -20    11    21    36    44    40    28    13   -17   -25     -30

ELDORA                    | 1949-2010 |   -14   -10     4    22    34    46    52    49    35    24     9    -8     -18
ELDORA                    | 1949-2010 |   -27   -29   -27     6    26    40    45    39    28    17   -13   -23     -29

ELKADER 5 SSW             | 1948-2010 |   -20   -15    -0    17    30    40    46    43    30    20     6   -13     -25
ELKADER 5 SSW             | 1948-2010 |   -40   -47   -31    -1    19    33    35    33    20     7   -22   -34     -47

EMMETSBURG                | 1948-2010 |   -16   -11     1    21    33    45    52    48    34    23     6   -10     -20
EMMETSBURG                | 1948-2010 |   -29   -29   -26     5    22    38    42    38    24    11   -11   -24     -29

ESTHERVILLE               | 1948-2010 |   -18   -13     0    19    32    44    49    46    33    21     5   -11     -20
ESTHERVILLE               | 1948-2010 |   -30   -29   -20     7    18    36    41    35    24    13   -12   -25     -30

FAIRFIELD                 | 1896-2010 |   -10    -5     8    23    35    46    52    49    36    25    11    -5     -14
FAIRFIELD                 | 1896-2010 |   -29   -31   -15     0    26    37    43    35    23     1    -6   -27     -31

FAYETTE                   | 1900-2010 |   -19   -15    -0    19    30    41    47    44    31    20     6   -12     -23
FAYETTE                   | 1900-2010 |   -38   -40   -33    -2    18    30    38    33    20    -5   -20   -34     -40

FOREST CITY 2 NNE         | 1948-2010 |   -18   -13     1    20    33    44    51    47    34    22     6   -11     -21
FOREST CITY 2 NNE         | 1948-2010 |   -30   -32   -26     6    22    37    45    36    20    13   -13   -25     -32

FORT DODGE                | 1948-2010 |   -15   -10     3    21    33    45    51    48    34    23     7    -8     -19
FORT DODGE                | 1948-2010 |   -27   -30   -22     6    25    36    43    38    26    14    -9   -26     -30

FORT MADISON              | 1952-2010 |    -7    -1    12    26    37    50    55    53    40    29    15    -0     -11
FORT MADISON              | 1952-2010 |   -23   -21   -11    11    22    41    47    42    31    15    -5   -19     -23

GLENWOOD 3 SW             | 1893-2008 |   -11    -6     6    23    34    46    52    49    35    23     9    -5     -16
GLENWOOD 3 SW             | 1893-2008 |   -28   -29   -24     3    26    35    41    37    22     0   -13   -27     -29

GREENFIELD 1 WNW          | 1948-2010 |   -12    -6     6    21    35    46    53    50    36    24     9    -5     -16
GREENFIELD 1 WNW          | 1948-2010 |   -28   -26   -20     7    24    39    43    39    28    13    -8   -25     -28

GRINNELL 3 SW             | 1893-2010 |   -14    -9     4    21    32    43    49    47    34    22     8    -7     -18
GRINNELL 3 SW             | 1893-2010 |   -34   -35   -17     1    19    35    29    36    21     2   -15   -32     -35

GRUNDY CENTER             | 1948-2010 |   -16   -11     3    20    32    45    50    47    34    22     7   -10     -19
GRUNDY CENTER             | 1948-2010 |   -31   -29   -28    -1    21    36    42    37    26    12   -14   -26     -31

GUTHRIE CENTER            | 1895-2010 |   -14   -10     4    20    32    44    50    46    33    22     7    -8     -19
GUTHRIE CENTER            | 1895-2010 |   -35   -35   -29     7    19    35    40    36    19     0   -16   -31     -35

GUTTENBERG L & D 10       | 1948-2010 |   -15   -10     5    24    36    47    53    51    37    27    12    -7     -19
GUTTENBERG L & D 10       | 1948-2010 |   -36   -38   -30     7    27    40    46    40    27    14   -11   -29     -38

HAMPTON                   | 1893-2010 |   -16   -12     1    21    32    44    50    46    34    23     6   -10     -20
HAMPTON                   | 1893-2010 |   -34   -31   -35     9     4    35    40    36    22    -1   -14   -23     -35

HARLAN                    | 1948-2010 |   -14    -8     4    21    34    46    52    49    35    23     8    -6     -17
HARLAN                    | 1948-2010 |   -29   -25   -23     2    25    31    40    35    27    12    -9   -26     -29

HAWARDEN                  | 1948-2010 |   -18   -12     1    19    31    43    50    47    32    20     4   -10     -21
HAWARDEN                  | 1948-2010 |   -30   -33   -20    -1    22    35    40    34    22     7   -19   -29     -33

HOLSTEIN                  | 1951-2010 |   -15   -12     3    22    35    49    52    52    37    25     9    -8     -18
HOLSTEIN                  | 1951-2010 |   -27   -19   -10    13    28    44    49    44    33    19     4   -13     -27

HUMBOLDT WATER PLANT      | 1997-2009 |   -11    -6     4    24    36    48    54    52    36    25    11    -6     -14
HUMBOLDT WATER PLANT      | 1997-2009 |   -27   -16    -7    15    28    42    47    45    32    15     3   -22     -27

HUMBOLDT 3 W              | 1956-1997 |   -17   -14     2    20    32    43    50    46    33    21     6   -11     -21
HUMBOLDT 3 W              | 1956-1997 |   -33   -31   -22     6    25    34    41    37    25    14   -14   -26     -33

IDA GROVE 5 NW            | 1948-2007 |   -16   -12     2    19    31    44    50    47    33    21     6    -9     -21
IDA GROVE 5 NW            | 1948-2007 |   -32   -30   -24     3    19    34    42    36    22    10   -13   -28     -32

INDEPENDENCE 5 ENE        | 1978-2009 |   -14    -8     4    20    34    45    50    47    33    22     9   -10     -19
INDEPENDENCE 5 ENE        | 1978-2009 |   -31   -30   -11    -1    25    36    41    36    26    15    -6   -29     -31

INDEPENDENCE              | 1948-1981 |   -18   -12     2    20    31    44    49    45    32    22     7   -11     -21
INDEPENDENCE              | 1948-1981 |   -27   -28   -30     4    23    38    40    38    24    13   -19   -27     -30

INDIANOLA                 | 1893-2010 |   -13    -8     6    23    34    46    52    49    35    24     9    -6     -17
INDIANOLA                 | 1893-2010 |   -32   -35   -20    -2    21    36    40    34    23     4   -11   -26     -35

INWOOD 2 SW               | 1948-1973 |   -23   -17    -2    18    28    41    48    44    32    19     3   -12     -24
INWOOD 2 SW               | 1948-1973 |   -32   -35   -20    11    17    34    40    33    21    12   -20   -21     -35

IOWA CITY 1 S             | 1948-2010 |   -11    -4     9    24    36    47    54    51    37    26    12    -4     -14
IOWA CITY 1 S             | 1948-2010 |   -29   -26   -17    10    24    38    45    39    29    12    -6   -20     -29

IOWA FALLS                | 1948-2010 |   -16   -11     3    21    33    44    50    47    33    22     7    -9     -19
IOWA FALLS                | 1948-2010 |   -31   -30   -31     5    24    36    43    34    25    12   -13   -23     -31

JEFFERSON 1 S             | 1948-2010 |   -13    -9     5    22    34    46    52    49    35    23     9    -6     -17
JEFFERSON 1 S             | 1948-2010 |   -25   -27   -26     8    19    39    44    39    29    12    -9   -24     -27

KEOKUK                    | 1933-2010 |    -5    -0    13    28    40    51    58    55    41    30    16     1      -9
KEOKUK                    | 1933-2010 |   -22   -19   -11    15    33    44    50    44    32    20    -3   -20     -22

KEOSAUQUA STATE PARK      | 1893-2010 |   -10    -5     8    23    34    46    52    49    36    25    12    -4     -14
KEOSAUQUA STATE PARK      | 1893-2010 |   -36   -29   -15     7    24    36    43    36    23     1    -6   -30     -36

KNOXVILLE                 | 1948-2010 |   -11    -5     7    24    37    48    54    51    38    26    11    -4     -15
KNOXVILLE                 | 1948-2010 |   -24   -29   -19     9    28    40    45    41    29    17    -5   -24     -29

LAKE CITY                 | 1948-1972 |   -17   -10     2    22    33    45    51    48    35    23     7    -6     -17
LAKE CITY                 | 1948-1972 |   -26   -21   -20    12    25    40    43    40    28    15    -8   -18     -26

LAKE PARK                 | 1948-2010 |   -18   -13    -1    20    32    45    51    47    35    22     5   -11     -20
LAKE PARK                 | 1948-2010 |   -30   -30   -22     6    16    38    42    36    27    12   -11   -28     -30

LAMONI                    | 1948-2010 |    -8    -3     9    25    38    50    56    53    39    27    13    -2     -12
LAMONI                    | 1948-2010 |   -22   -22   -10    11    29    41    46    44    30    16   -11   -22     -22

LAMONI FAA AIRPORT        | 1949-1962 |   -10    -3     6    22    33    45    54    49    36    25     9    -3     -13
LAMONI FAA AIRPORT        | 1949-1962 |   -18   -20   -16    16    29    41    49    40    30    20     1   -14     -20

LE CLAIRE L & D 14        | 1948-2010 |    -9    -4    10    26    38    50    56    53    41    30    15    -3     -13
LE CLAIRE L & D 14        | 1948-2010 |   -24   -28   -14    11    28    42    48    43    32    18    -4   -21     -28

LE MARS                   | 1896-2010 |   -17   -13     1    19    31    43    49    46    32    21     5   -11     -21
LE MARS                   | 1896-2010 |   -37   -35   -26    -2    17    33    38    35    22    -7   -24   -33     -37

LEON 6 ESE                | 1962-2010 |   -11    -7     6    21    34    45    52    49    35    24    11    -6     -17
LEON 6 ESE                | 1962-2010 |   -28   -36   -21     7    26    35    44    35    22    13   -12   -33     -36

LITTLE SIOUX 2 NW         | 2002-2010 |   -17   -11     2    20    32    47    50    47    33    22     7    -7     -19
LITTLE SIOUX 2 NW         | 2002-2010 |   -30   -17    -7    14    26    42    47    40    27    18     3   -19     -30

LOGAN                     | 1893-2010 |   -14   -10     4    22    33    45    51    48    34    22     7    -7     -19
LOGAN                     | 1893-2010 |   -35   -34   -21     4    21    36    35    37    19    -2   -14   -30     -35

MANCHESTER #2             | 1976-2010 |   -16   -10     4    20    32    43    49    46    33    22     8    -9     -20
MANCHESTER #2             | 1976-2010 |   -36   -32   -12    -9    19    35    42    38    23    11   -16   -26     -36

MAPLETON NO 2             | 1948-2010 |   -17   -11     2    20    32    44    50    48    33    21     6    -9     -20
MAPLETON NO 2             | 1948-2010 |   -32   -27   -22    -1    23    36    42    36    24    10   -13   -28     -32

MAQUOKETA 3 S             | 1897-2010 |   -14   -10     5    21    32    43    49    46    34    23     9    -9     -20
MAQUOKETA 3 S             | 1897-2010 |   -37   -34   -20     5    21    32    39    34    17     2    -8   -27     -37

MARSHALLTOWN 2            | 1893-2010 |   -15   -11     4    22    33    45    50    47    33    22     8    -9     -19
MARSHALLTOWN 2            | 1893-2010 |   -34   -35   -32     4    20    30    42    35    20    -3   -11   -28     -35

MASON CITY                | 1896-2010 |   -19   -14     0    20    31    42    48    44    32    21     5   -11     -22
MASON CITY                | 1896-2010 |   -34   -35   -32     5    23    31    38    30    15    -4   -14   -26     -35

MASON CITY AP             | 1948-2010 |   -17   -13     1    20    31    43    50    46    33    21     5   -12     -21
MASON CITY AP             | 1948-2010 |   -31   -32   -28     6    22    36    42    35    24    12   -16   -26     -32

MILFORD 4 NW              | 1948-2010 |   -19   -14    -1    19    31    44    49    46    34    21     4   -12     -22
MILFORD 4 NW              | 1948-2010 |   -34   -28   -22     4    18    35    41    35    24    12   -14   -27     -34

MILLERTON                 | 1893-1951 |   -12    -7     5    22    34    45    52    49    35    24     9    -6     -16
MILLERTON                 | 1893-1951 |   -30   -31   -14     7    21    37    45    36    23    -1    -5   -24     -31

MISSOURI VALLEY 1 NNE     | 1948-1956 |   -13    -5     4    22    35    46    52    50    34    24     8    -3     -15
MISSOURI VALLEY 1 NNE     | 1948-1956 |   -19   -16    -1    14    30    41    47    41    27    16    -2   -15     -19

MOUNT AYR 4 SW            | 1893-2010 |   -11    -6     6    22    35    46    53    49    36    24    10    -4     -15
MOUNT AYR 4 SW            | 1893-2010 |   -30   -29   -20     5    22    36    43    37    24     0   -15   -28     -30

MOUNT PLEASANT 1 SSW      | 1948-2010 |   -10    -5     8    24    35    47    52    50    37    26    12    -4     -14
MOUNT PLEASANT 1 SSW      | 1948-2010 |   -27   -27   -15     9    26    40    43    39    29    13    -5   -25     -27

MUSCATINE                 | 1948-2010 |   -10    -4     8    24    36    48    53    51    37    26    13    -4     -14
MUSCATINE                 | 1948-2010 |   -28   -34   -17    10    26    39    45    39    26    17    -5   -23     -34

MUSCATINE 2 N             | 1999-2010 |    -5    -0    10    28    38    51    56    54    40    30    18     0     -10
MUSCATINE 2 N             | 1999-2010 |   -20    -8    -5    20    30    47    54    47    35    26     8   -15     -20

NEW HAMPTON 1 E           | 1897-2010 |   -18   -13     0    20    32    43    49    46    33    22     5   -11     -22
NEW HAMPTON 1 E           | 1897-2010 |   -34   -33   -25     5    20    34    41    35    19     0   -14   -29     -34

NEWTON 2 E                | 1899-2010 |   -12    -7     6    23    36    48    54    51    37    26    10    -5     -16
NEWTON 2 E                | 1899-2010 |   -31   -26   -18     9    28    41    44    37    27    13    -5   -22     -31

NORTHWOOD                 | 1948-2010 |   -19   -13    -0    20    32    44    50    46    34    22     6   -12     -21
NORTHWOOD                 | 1948-2010 |   -32   -33   -27     6    21    37    44    36    26    12   -14   -27     -33

NORWICH SCS EXP FARM      | 1948-1970 |   -12    -5     5    23    35    47    53    50    36    24     9    -4     -15
NORWICH SCS EXP FARM      | 1948-1970 |   -20   -21   -19    15    27    39    48    43    28    15   -11   -16     -21

OAKLAND 4 WSW             | 1948-2010 |   -15    -9     4    20    33    44    50    48    34    22     7    -7     -19
OAKLAND 4 WSW             | 1948-2010 |   -31   -29   -24     0    21    33    36    35    23    12   -17   -30     -31

OELWEIN                   | 1948-2005 |   -17   -12     2    20    32    44    49    47    33    22     7   -11     -21
OELWEIN                   | 1948-2005 |   -30   -32   -27     3    22    36    40    37    25     9   -18   -29     -32

ONAWA                     | 1899-2010 |   -14   -10     3    21    33    45    51    48    34    22     7    -7     -18
ONAWA                     | 1899-2010 |   -32   -30   -23     4    23    36    38    24    23    -1   -15   -27     -32

OSAGE                     | 1948-2010 |   -17   -12     2    21    33    45    51    48    35    24     7   -11     -20
OSAGE                     | 1948-2010 |   -32   -32   -27     6    22    39    43    37    22    12   -15   -30     -32

OSCEOLA 3 WSW             | 1948-2010 |   -11    -6     6    22    35    46    53    50    37    24    10    -4     -14
OSCEOLA 3 WSW             | 1948-2010 |   -28   -26   -20     7    24    37    42    38    28     9    -7   -25     -28

OSKALOOSA                 | 1893-2010 |   -12    -7     6    23    35    46    52    49    35    24    10    -6     -16
OSKALOOSA                 | 1893-2010 |   -31   -31   -30     9    24    36    44    36    20     3    -7   -30     -31

OTTUMWA AIRPORT           | 1948-2010 |   -10    -4     8    24    37    49    55    52    39    27    13    -3     -13
OTTUMWA AIRPORT           | 1948-2010 |   -23   -27   -20     9    24    43    48    41    27    17    -9   -21     -27

PERRY                     | 1948-2010 |   -15   -10     5    22    34    45    51    48    34    23     9    -7     -19
PERRY                     | 1948-2010 |   -32   -33   -30     6    24    37    42    36    25    14   -13   -28     -33

POCAHONTAS 2 SE           | 1948-2010 |   -16   -12     2    21    33    45    50    47    33    22     6   -10     -19
POCAHONTAS 2 SE           | 1948-2010 |   -28   -27   -20     2    25    37    42    37    25    14   -13   -30     -30

POSTVILLE                 | 1991-2010 |   -14   -12     1    21    31    46    50    45    33    23    11    -7     -18
POSTVILLE                 | 1991-2010 |   -26   -21   -12    11    23    43    41    39    28    19     2   -15     -26

PRIMGHAR                  | 1948-2010 |   -18   -12     0    19    32    45    51    48    34    21     4   -11     -21
PRIMGHAR                  | 1948-2010 |   -30   -29   -20     3    22    38    40    38    25    12   -13   -28     -30

RATHBUN DAM               | 1970-2010 |   -10    -5     8    25    37    48    54    52    38    26    13    -3     -15
RATHBUN DAM               | 1970-2010 |   -28   -26   -11    14    28    41    43    43    30    16    -8   -26     -28

RED OAK                   | 1948-2010 |   -12    -7     6    21    34    45    52    49    34    23    10    -5     -16
RED OAK                   | 1948-2010 |   -27   -28   -21     2    26    35    39    34    23    13   -14   -26     -28

ROCK RAPIDS               | 1893-2010 |   -19   -15    -1    19    31    43    49    45    31    19     3   -12     -23
ROCK RAPIDS               | 1893-2010 |   -40   -40   -23     3    20    32    32    34    18   -10   -20   -30     -40

ROCKWELL CITY             | 1894-2010 |   -15   -11     2    20    33    45    51    48    34    23     7    -9     -19
ROCKWELL CITY             | 1894-2010 |   -35   -32   -22     4    17    34    42    36    20    -3   -16   -32     -35

SAC CITY                  | 1948-2010 |   -15   -11     3    21    33    45    51    49    35    23     8    -8     -19
SAC CITY                  | 1948-2010 |   -31   -28   -19     4    24    32    44    39    27     9   -11   -27     -31

SANBORN                   | 1948-2010 |   -19   -13    -1    18    31    44    50    47    33    21     4   -11     -22
SANBORN                   | 1948-2010 |   -33   -28   -20     3    16    37    38    38    25     9   -16   -29     -33

SARATOGA 2 E              | 1949-1968 |   -24   -17    -7    19    28    38    45    39    27    19     4   -16     -27
SARATOGA 2 E              | 1949-1968 |   -40   -30   -32     7    22    33    40    31    16     7   -12   -34     -40

SHELDON                   | 1948-2010 |   -20   -14    -1    18    30    43    48    45    32    19     3   -12     -22
SHELDON                   | 1948-2010 |   -32   -32   -22     3    17    33    41    33    23    10   -20   -24     -32

SHENANDOAH                | 1948-2010 |   -10    -5     7    23    36    48    54    50    36    24    11    -4     -14
SHENANDOAH                | 1948-2010 |   -26   -24   -22     8    26    39    41    38    23    15    -8   -26     -26

SIBLEY 5 NNE              | 1948-2010 |   -20   -15    -2    18    30    42    48    45    31    19     3   -13     -24
SIBLEY 5 NNE              | 1948-2010 |   -31   -36   -24     3    15    32    40    30    23    11   -20   -29     -36

SIDNEY 1 NNW              | 1949-2010 |    -9    -3     8    25    38    50    56    53    39    27    12    -2     -13
SIDNEY 1 NNW              | 1949-2010 |   -22   -23   -17     8    28    41    44    42    28    14    -9   -25     -25

SIGOURNEY                 | 1948-2010 |   -11    -6     7    23    36    48    54    51    38    26    12    -4     -15
SIGOURNEY                 | 1948-2010 |   -25   -27   -20     7    25    41    45    40    28    14    -5   -23     -27

SIOUX CENTER 2 SE         | 1948-2010 |   -18   -12     1    19    31    43    49    46    32    20     4   -11     -21
SIOUX CENTER 2 SE         | 1948-2010 |   -30   -27   -19    -1    17    33    38    37    21     9   -20   -29     -30

SIOUX CITY WSO AP         | 1948-2010 |   -14    -9     4    22    34    46    52    49    34    22     7    -8     -18
SIOUX CITY WSO AP         | 1948-2010 |   -26   -26   -22    -2    25    39    42    37    25    12    -9   -24     -26

SIOUX RAPIDS 4 E          | 1948-2010 |   -18   -13     1    20    32    44    49    46    33    21     5   -11     -21
SIOUX RAPIDS 4 E          | 1948-2010 |   -32   -32   -22     3    23    34    41    34    25    11   -17   -26     -32

SPENCER 1 N               | 1895-2010 |   -18   -14    -1    19    31    42    48    44    31    20     3   -12     -21
SPENCER 1 N               | 1895-2010 |   -38   -36   -28     0    20    30    40    34    21    -8   -17   -30     -38

SPIRIT LAKE               | 1998-2010 |   -14    -8     2    22    36    47    53    50    36    24    11    -8     -16
SPIRIT LAKE               | 1998-2010 |   -29   -20   -11    13    27    41    46    40    32    18     3   -18     -29

STORM LAKE 2 E            | 1893-2010 |   -16   -12     1    20    32    44    51    47    34    23     6   -10     -20
STORM LAKE 2 E            | 1893-2010 |   -31   -34   -24     2    20    34    42    36    22     2   -11   -29     -34

SWEA CITY                 | 1954-2010 |   -17   -13    -0    20    32    45    50    47    33    21     6   -11     -21
SWEA CITY                 | 1954-2010 |   -32   -28   -20     0    10    35    37    38    22    12   -14   -28     -32

TINGLEY                   | 1948-1956 |   -10    -5     2    21    34    45    52    49    36    23     9    -5     -13
TINGLEY                   | 1948-1956 |   -16   -18    -3    15    28    40    48    37    27    17     0   -15     -18

TIPTON 4 NE               | 1902-2010 |   -12    -7     6    23    34    45    51    48    36    24    10    -7     -16
TIPTON 4 NE               | 1902-2010 |   -30   -30   -19     9    22    37    43    36    25     2    -7   -25     -30

TOLEDO                    | 1948-2010 |   -14   -10     4    21    33    45    50    48    34    22     9    -8     -18
TOLEDO                    | 1948-2010 |   -30   -34   -31     5    24    36    41    38    23    10   -10   -26     -34

TRIPOLI                   | 1948-2010 |   -18   -12     2    21    33    44    50    46    34    23     7   -11     -22
TRIPOLI                   | 1948-2010 |   -32   -32   -27     0    24    36    43    38    25    10   -15   -28     -32

VINTON                    | 1948-2010 |   -15   -10     4    21    34    45    51    47    34    23     9    -9     -19
VINTON                    | 1948-2010 |   -34   -30   -34     4    22    36    44    36    23    10   -10   -27     -34

WASHINGTON                | 1893-2010 |   -11    -6     7    23    35    46    52    49    36    25    11    -5     -15
WASHINGTON                | 1893-2010 |   -32   -29   -16     7    23    35    45    37    23     6    -7   -25     -32

WATERLOO                  | 1895-1950 |   -16   -12     3    21    32    43    49    46    33    22     7   -10     -20
WATERLOO                  | 1895-1950 |   -33   -30   -18    13    22    33    43    34    19     0    -9   -29     -33

WATERLOO WSO AP           | 1950-2010 |   -17   -12     3    20    32    44    51    46    33    22     7   -11     -20
WATERLOO WSO AP           | 1950-2010 |   -34   -31   -34    -4    22    38    42    33    22    11   -17   -29     -34

WAUKON                    | 1948-2010 |   -17   -12     1    20    32    44    50    48    35    24     7   -10     -22
WAUKON                    | 1948-2010 |   -31   -34   -21     7    24    37    41    36    26    15   -13   -28     -34

WEBSTER CITY              | 1893-2010 |   -17   -12     2    20    31    43    49    45    32    21     6   -10     -21
WEBSTER CITY              | 1893-2010 |   -33   -32   -29     4    17    33    39    34    20    -8   -16   -28     -33

WILLIAMSBURG              | 1948-2010 |   -14    -8     5    22    34    46    51    48    35    24     9    -7     -18
WILLIAMSBURG              | 1948-2010 |   -28   -31   -25     5    23    37    45    40    27    10    -8   -27     -31

WINTERSET 2 NNW           | 1948-2010 |   -14    -9     4    21    33    45    51    48    34    22     8    -7     -18
WINTERSET 2 NNW           | 1948-2010 |   -31   -31   -35    10    24    34    41    38    26    12    -8   -25     -35

WOODWARD 7 N              | 1948-1974 |   -18   -10     4    22    34    46    51    48    35    23     8    -8     -19
WOODWARD 7 N              | 1948-1974 |   -27   -23   -23    14    26    37    42    39    29    14   -10   -20     -27


 Copyright ©2011 Western Regional Climate Center - Desert Research Institute - Reno, Nevada.