ILLINOIS

                                           MONTHLY AVERAGE MINIMUM TEMPERATURES (F)

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

ALBION                    | 1948-2006 |  22.8  26.7  35.2  45.9  55.4  64.2  67.6  65.7  58.7  47.1  36.9  27.1    46.1
ALEDO                     | 1901-2010 |  14.0  17.6  28.2  39.5  50.1  59.6  63.6  61.5  53.5  42.5  30.4  18.9    39.9
ALTON DAM 26              | 1948-2010 |  20.4  24.3  33.4  45.1  55.4  64.8  69.0  66.9  58.8  47.1  36.0  25.6    45.6
ANNA 1 E                  | 1901-2010 |  24.9  27.7  36.3  46.2  55.2  63.7  67.5  65.9  58.9  47.5  37.1  28.2    46.6
ANTIOCH                   | 1948-2008 |  12.0  15.4  24.9  36.2  46.0  56.1  61.2  60.0  52.2  41.3  29.9  18.1    37.8
ATHENS 2 SW               | 2000-2010 |  18.5  20.1  30.7  42.3  51.4  61.0  63.9  62.9  54.0  42.8  33.5  21.2    41.9
AURORA COLLEGE            | 1901-2010 |  13.6  16.8  27.1  37.5  47.5  57.1  61.7  60.2  52.5  41.0  29.9  18.4    38.6
BARRINGTON                | 1962-2010 |  11.4  14.4  26.0  37.6  46.8  56.8  61.6  60.0  52.1  40.6  30.1  16.9    37.9
BELLEVILLE SIU RESEARCH   | 1948-2010 |  22.4  26.4  34.7  45.2  54.3  63.2  66.8  64.4  56.5  45.5  35.9  26.8    45.2
BENTLEY                   | 1948-2010 |  15.2  20.8  30.0  41.1  51.4  61.2  64.6  62.9  53.6  42.4  32.0  20.4    41.3
BENTON FOREST SERVICE     | 1948-2009 |  24.2  27.2  35.6  45.5  54.2  63.1  67.7  65.8  57.0  45.2  36.9  25.9    45.7
BLOOMINGTON 5 W           | 1999-2010 |  16.3  18.1  29.1  40.2  49.7  59.7  62.4  61.3  53.5  42.2  32.3  19.2    40.3
NORMAL                    | 1901-1977 |  17.5  20.6  30.2  40.7  50.9  60.3  64.1  62.4  55.3  44.4  32.4  21.9    41.7
BROOKPORT DAM 52          | 1948-2010 |  25.1  28.3  37.2  47.2  56.1  64.3  68.2  66.2  58.9  47.0  38.3  29.0    47.2
BROWNSTOWN 4 SW           | 1992-2009 |  21.6  25.7  33.9  44.5  54.5  63.5  66.2  64.2  55.0  44.4  35.9  25.8    44.6
CAHOKIA                   | 1969-2010 |  21.0  24.5  34.5  44.8  54.2  63.6  67.5  65.6  57.3  45.1  35.2  25.4    44.9
CAIRO 3 N                 | 1948-2010 |  27.0  30.8  39.0  49.7  59.1  67.2  71.0  69.0  61.5  49.9  39.4  30.9    49.5
CARBONDALE SEWAGE PLANT   | 1910-2010 |  23.9  26.8  35.1  45.2  54.1  63.0  66.6  64.5  56.8  44.9  35.4  27.3    45.3
CARLINVILLE               | 1901-2010 |  19.7  23.1  32.2  42.6  52.3  61.4  65.1  63.3  55.8  44.7  33.7  24.0    43.2
CARLYLE                   | 1948-1964 |  22.6  26.0  33.3  43.6  54.6  63.6  67.0  64.8  56.5  45.6  33.1  26.0    44.7
CARLYLE RESERVOIR         | 1962-2010 |  19.0  22.7  33.5  44.6  54.4  63.4  67.2  65.2  57.1  45.1  35.5  24.7    44.4
CARMI 3                   | 1987-2010 |  24.9  26.8  34.9  44.9  54.3  63.5  66.9  64.8  56.1  43.8  35.8  26.2    45.2
CASEY                     | 1948-2010 |  19.1  23.0  32.8  42.1  52.0  62.0  65.4  63.4  54.9  43.6  34.7  22.4    42.9
CHAMPAIGN 9 SW (CRN)      | 2002-2010 |  16.8  18.0  31.3  40.6  50.6  59.5  61.5  59.8  53.1  40.7  32.4  20.3    40.4
CHANNAHON DRESDEN ISLAN   | 1948-2010 |  16.7  19.7  28.2  39.2  48.4  58.9  62.9  61.9  54.1  42.3  32.5  20.5    40.4
CHARLESTON                | 1901-2010 |  20.2  23.1  32.5  42.8  52.6  61.5  65.3  63.5  56.3  45.2  34.3  24.2    43.5
CHENOA                    | 1948-2010 |  15.2  19.8  29.1  40.2  50.3  60.0  63.4  61.3  53.7  42.7  31.9  20.9    40.7
CHICAGO BOTANICAL GARDE   | 1981-2010 |  16.2  19.2  28.3  38.0  47.3  57.0  63.1  62.3  53.9  42.3  32.8  20.6    40.1
CHICAGO O'HARE WSO ARPT   | 1958-2010 |  14.7  18.7  28.4  38.7  48.2  57.8  63.2  62.3  54.2  42.7  32.0  20.2    40.1
CHICAGO UNIVERSITY        | 1948-1994 |  18.4  22.5  30.9  41.2  50.8  60.7  66.5  65.5  58.2  47.5  35.4  23.8    43.5
CHICAGO MIDWAY AP 3 SW    | 1928-2010 |  17.1  20.5  29.7  40.2  50.1  60.3  66.2  65.0  56.9  45.4  33.2  22.2    42.2
CHICAGO WB CITY           | 1948-1965 |  20.4  23.9  30.8  41.9  52.1  62.6  68.5  68.0  60.3  50.5  36.0  24.4    45.0
CICERO                    | 1948-1959 |  19.2  22.5  28.9  40.0  50.2  60.3  65.4  63.2  54.8  45.6  32.8  22.6    42.1
COBDEN 2 S                | 1951-1976 |  23.2  26.9  34.6  46.1  53.9  62.1  65.4  63.4  56.5  45.5  35.3  27.4    45.0
COMPTON 1 NW              | 1991-2004 |  11.7  17.3  24.9  35.7  46.9  56.6  60.9  59.0  49.6  38.7  27.9  18.4    37.3
CONGERVILLE 2 NW          | 1990-2010 |  14.9  19.6  28.7  39.6  49.3  59.2  62.5  60.4  51.6  40.0  31.0  19.3    39.7
DANVILLE                  | 1901-2010 |  18.4  21.6  30.7  40.9  50.5  59.8  63.6  61.9  54.5  43.1  32.9  23.1    41.7
DECATUR                   | 1901-2010 |  18.8  22.0  31.5  41.9  51.9  61.2  65.0  63.2  55.8  44.5  33.4  23.3    42.7
DE KALB                   | 1966-2010 |  11.8  16.5  27.1  37.9  48.2  58.8  62.8  60.8  52.8  40.9  30.1  18.4    38.8
DIXON 1 NW                | 1901-2009 |  12.2  15.8  26.6  37.8  48.5  58.1  62.3  60.3  52.4  40.9  29.5  17.7    38.5
DIXON SPRINGS AGR CENTE   | 1967-2010 |  24.9  28.7  37.4  47.0  55.0  63.2  67.1  65.5  58.3  47.0  38.5  29.4    46.8
DU QUOIN 2 S              | 1901-2010 |  23.6  26.7  35.4  45.3  54.7  63.2  66.7  64.7  57.2  45.8  35.6  26.9    45.5
DWIGHT                    | 1990-2010 |  14.6  18.6  27.2  38.0  49.5  59.4  62.5  60.1  51.2  40.0  30.5  19.4    39.2
EAST ST LOUIS PARKS CO    | 1948-1968 |  22.7  26.2  33.5  45.1  55.2  64.6  67.6  66.4  57.8  46.7  35.5  26.6    45.7
EFFINGHAM                 | 1901-2010 |  20.1  22.7  32.0  42.5  51.9  61.2  65.0  63.0  55.3  44.1  33.7  24.1    43.0
ELGIN                     | 1948-2010 |  11.8  16.0  26.1  37.1  47.6  57.2  62.5  60.7  52.0  39.5  29.9  17.5    38.2
ELIZABETH 5 S             | 1984-2010 |   9.8  13.8  25.0  35.5  45.1  55.6  59.3  57.1  48.1  36.4  26.9  14.3    35.6
ELIZABETHTOWN 1 NW        | 1948-1968 |  25.8  29.1  35.6  46.5  54.9  62.7  66.4  64.2  57.2  46.5  35.2  28.3    46.0
FAIRFIELD RADIO WFIW      | 1901-2010 |  22.9  25.6  34.5  44.3  53.5  62.3  65.9  64.2  56.9  45.3  35.1  26.2    44.7
FARMER CITY               | 1948-2010 |  15.1  19.4  29.7  40.2  50.7  59.9  63.4  60.9  53.7  42.3  31.9  21.7    40.7
FLORA                     | 2000-2010 |  22.0  23.6  33.2  44.2  53.8  63.1  65.2  63.9  55.3  43.8  34.8  24.1    43.9
FLORA 5 NW                | 1901-2009 |  22.1  24.8  33.9  43.7  53.1  61.9  65.5  63.6  56.2  45.1  34.6  25.6    44.2
FREEPORT                  | 1909-1973 |  10.4  14.7  24.8  36.6  47.0  57.0  60.8  58.8  51.2  40.4  28.3  16.4    37.2
FREEPORT WASTE WTR PLT    | 1948-2010 |  10.0  14.1  25.4  36.9  47.8  57.6  61.9  59.5  50.3  38.5  28.4  15.8    37.2
FULTON LOCK & DAM #13     | 1948-2010 |  11.9  16.1  26.8  39.6  50.6  60.2  64.4  62.6  54.1  43.0  31.0  18.3    39.9
GALESBURG                 | 1948-2010 |  13.9  18.6  28.4  40.5  51.2  61.0  65.1  63.1  54.6  43.2  31.0  19.7    40.9
GALVA                     | 1901-2010 |  13.5  17.0  27.4  38.7  49.6  59.2  63.3  61.1  53.2  42.0  30.1  18.5    39.5
GEBHARD WOODS STATE PAR   | 1970-1995 |  11.7  16.3  28.4  38.6  48.8  58.4  63.0  60.4  51.9  40.0  30.7  19.0    38.9
GENESEO                   | 1948-2010 |  13.1  17.8  28.4  40.1  51.1  60.8  64.7  62.6  54.1  42.8  31.1  19.0    40.5
GIBSON CITY 1 E           | 1948-2008 |  16.4  19.5  28.9  38.8  50.3  59.8  63.1  60.7  52.0  40.4  31.4  20.3    40.1
GLADSTONE DAM 18          | 1948-2010 |  14.6  19.8  29.0  41.6  52.5  62.2  65.8  64.2  55.2  43.8  32.5  20.4    41.8
GOLCONDA 1 SE             | 1948-1980 |  25.1  29.0  34.7  45.6  55.1  64.2  68.2  66.6  58.5  46.9  33.5  27.8    46.3
GOLDEN                    | 1948-2008 |  15.8  19.5  30.7  41.6  51.9  61.2  65.0  62.5  54.5  43.6  32.5  21.2    41.7
GRAND CHAIN DAM 53        | 1948-2010 |  26.1  29.2  36.3  46.8  56.5  64.1  68.0  67.7  60.1  48.0  38.4  28.9    47.5
 UNKNOWN                  | 2000-2010 |  24.1  24.0  35.4  46.6  54.5  64.4  66.9  65.9  57.8  45.4  36.9  25.9    45.6
GREENVILLE 1 E            | 1901-2010 |  22.0  24.2  33.5  43.5  53.6  62.7  66.6  65.0  57.7  46.4  34.2  25.1    44.6
GRIGGSVILLE               | 1901-2010 |  18.4  21.4  31.6  42.7  52.9  62.1  66.0  64.0  56.3  45.3  33.5  22.9    43.1
HARRISBURG                | 1901-2010 |  24.8  27.5  36.4  45.9  54.9  63.5  67.1  65.3  57.9  46.0  36.6  28.4    46.2
HAVANA                    | 1901-1966 |  17.6  20.7  30.2  41.2  51.8  61.4  65.3  63.2  55.7  44.0  31.9  21.6    42.1
HAVANA 4 NNE              | 1948-2010 |  15.3  19.6  30.0  41.1  51.0  60.8  64.7  62.1  53.2  41.7  31.7  20.6    41.0
HENNEPIN POWER PLANT      | 1962-2009 |  12.4  16.5  27.7  38.6  48.6  58.1  62.0  60.1  51.9  40.4  30.0  18.2    38.7
HILLSBORO 2 SSW           | 1901-2010 |  20.7  23.8  33.1  43.3  53.0  61.9  65.7  63.7  56.1  45.2  34.5  24.6    43.8
HOOPESTON                 | 1902-2010 |  18.1  21.0  30.2  40.4  50.6  60.1  63.7  61.9  54.7  43.5  32.9  22.3    41.6
ILLINOIS CITY DAM 16      | 1948-2010 |  13.4  15.3  29.5  41.6  51.0  62.0  63.0  63.2  55.1  41.9  32.6  16.7    40.4
IUKA 7 SW                 | 1997-2010 |  21.4  24.2  33.0  44.3  53.4  61.9  65.3  63.8  55.4  44.0  35.4  24.5    43.9
JACKSONVILLE 2 E          | 1901-2010 |  17.8  20.9  30.3  41.0  51.0  60.4  64.0  62.1  54.3  43.2  32.2  22.1    41.6
JERSEYVILLE 2 SW          | 1948-2010 |  18.6  22.6  31.6  42.6  52.5  61.6  65.2  62.8  54.5  43.4  33.3  23.3    42.7
JOLIET BRANDON RD DAM     | 1948-2010 |  14.3  18.5  28.6  39.3  49.0  59.1  63.6  62.2  53.9  41.9  32.1  19.8    40.2
JOLIET                    | 1901-1974 |  15.7  19.7  27.8  39.7  49.0  59.2  63.1  61.5  53.9  44.1  31.9  20.7    40.5
KANKAKEE 3 SW             | 1917-1973 |  16.3  20.0  28.7  38.9  48.8  58.9  62.6  60.8  53.8  43.0  31.6  21.1    40.4
KANKAKEE 4 NW             | 1948-1960 |  17.8  20.9  27.6  38.5  49.1  59.3  62.8  60.6  52.1  42.5  29.6  21.0    40.1
KANKAKEE SEWAGE PLANT     | 1948-2010 |  14.0  17.7  28.2  38.6  49.2  59.1  63.6  61.5  52.7  40.8  31.5  20.0    39.7
KASKASKIA R NAV LOCK      | 1974-2010 |  21.1  24.4  33.7  44.2  54.2  63.1  67.3  64.9  56.3  44.3  35.2  24.7    44.4
KEWANEE                   | 1948-2010 |  12.7  17.2  27.0  38.6  49.5  59.2  63.0  60.8  52.1  41.2  30.0  18.6    39.2
LACON 1 N                 | 1950-2009 |  15.6  19.6  29.6  40.9  50.8  60.0  63.9  62.2  54.3  43.0  32.3  21.4    41.1
LA HARPE 1 SW             | 1901-2010 |  14.9  18.6  28.9  39.9  50.4  59.9  63.7  61.7  53.9  42.6  30.7  19.7    40.4
LAKE VILLA 2 NE           | 1985-2005 |  14.9  18.8  26.9  37.1  47.3  57.5  62.8  62.0  53.8  42.0  31.2  19.8    39.5
LA SALLE PERU             | 1948-1963 |  16.0  20.8  28.0  40.0  50.9  60.5  64.6  63.0  54.1  44.0  31.3  21.2    41.2
LAWRENCEVILLE             | 1967-2010 |  23.0  25.9  33.9  43.6  54.3  63.5  66.7  64.4  56.4  45.0  35.8  26.3    44.9
LINCOLN                   | 1906-2010 |  17.5  21.2  30.1  41.1  51.3  60.7  64.2  62.2  54.6  43.0  32.3  22.2    41.7
MAKANDA 1 NW              | 1951-1976 |  24.4  28.1  35.3  47.3  55.4  64.0  67.2  65.5  58.8  48.8  37.4  28.6    46.7
MARENGO                   | 1901-2010 |  11.8  14.7  25.5  36.1  46.3  56.2  60.8  59.1  51.4  40.3  29.0  17.1    37.4
MARION 4 NNE              | 1948-1998 |  20.3  23.9  33.4  43.2  52.6  61.6  66.1  63.6  56.0  43.8  34.9  25.4    43.7
MARSEILLES LOCK           | 1948-2010 |  14.3  18.1  27.5  38.5  48.6  57.8  62.0  60.8  52.8  41.1  30.6  18.2    39.2
MARSHALL                  | 1948-2004 |  18.1  21.7  31.3  42.0  51.4  59.6  63.2  60.7  54.3  43.4  34.0  24.2    42.0
MASON CITY 1 W            | 1948-2010 |  15.8  20.5  31.1  41.8  52.1  61.3  64.7  62.3  54.7  43.6  32.8  21.3    41.8
MATTOON                   | 1948-2010 |  18.5  22.7  31.0  42.0  52.4  61.6  65.4  63.2  55.4  44.3  33.2  23.1    42.7
MCHENRY LOCK & DAM        | 1948-2010 |  12.7  16.4  26.1  37.2  46.9  57.3  61.5  60.2  51.1  39.8  30.2  18.2    38.1
MC LEANSBORO 2 E          | 1901-2002 |  23.0  25.9  34.7  44.5  53.9  62.6  66.3  64.3  57.1  45.6  35.3  26.5    45.0
MINONK                    | 1901-2010 |  14.7  18.1  28.3  38.7  49.1  58.7  62.5  60.5  53.0  41.9  30.6  19.4    39.6
MOLINE WSO AP             | 1948-2010 |  12.9  17.6  27.9  39.7  50.2  60.1  64.5  62.4  53.3  42.1  30.5  18.7    40.0
MONMOUTH                  | 1901-2010 |  15.1  18.9  29.1  40.1  50.4  59.8  63.8  61.7  54.0  43.1  31.1  20.1    40.6
MONMOUTH 4 NW             | 1995-2010 |  13.6  18.1  27.4  39.4  50.5  60.2  63.2  62.3  52.4  41.0  30.3  18.5    39.7
MORRIS 5 N                | 1948-2010 |  14.6  18.8  27.2  38.8  49.1  59.4  63.0  61.1  53.1  42.2  30.9  19.7    39.8
MORRISON                  | 1901-2010 |  12.1  15.8  26.8  37.9  48.7  58.2  62.2  60.1  52.0  40.7  29.1  17.5    38.4
MORRISONVILLE             | 1948-2010 |  18.0  21.5  31.1  41.7  52.5  61.7  64.9  62.9  54.3  42.3  32.9  22.0    42.2
MORRISONVILLE 4 SE        | 1901-1971 |  19.7  22.4  31.4  41.7  51.7  61.0  64.4  62.4  55.5  44.4  32.8  23.3    42.6
MOUNT CARMEL              | 1948-2010 |  22.1  24.4  33.7  43.9  54.0  63.1  66.9  64.5  56.2  44.3  35.4  25.4    44.5
MOUNT CARMEL 3 N          | 1902-1977 |  23.1  25.4  35.0  44.8  54.0  62.8  66.3  64.5  57.5  45.8  35.1  26.6    45.1
MOUNT CARROLL             | 1901-2010 |  10.6  14.2  25.4  36.2  46.8  56.1  60.1  58.1  50.2  38.9  28.0  16.1    36.7
MT VERNON 3 NE            | 1901-2010 |  21.9  24.7  33.7  44.1  53.5  62.4  66.2  64.4  56.9  45.2  34.8  25.4    44.4
MOWEAQUA                  | 1963-2010 |  17.2  21.2  30.9  41.6  51.5  60.7  64.3  61.7  54.2  43.1  33.2  22.9    41.9
MUNDELEIN 4 WSW           | 1999-2010 |  14.6  16.1  26.3  37.5  47.3  58.0  62.4  61.5  53.2  41.8  31.8  17.6    39.0
NASHVILLE 4 NE            | 1948-2010 |  21.8  25.8  35.2  45.6  55.0  63.8  67.3  65.1  57.9  46.9  36.8  26.5    45.6
NEW BOSTON DAM 17         | 1948-2010 |  15.8  19.7  29.8  42.5  51.9  61.8  65.5  63.5  54.5  43.3  33.6  20.5    41.9
NEW BURNSIDE              | 1901-1964 |  24.6  26.7  35.3  44.7  53.9  62.3  65.7  64.2  57.4  46.3  35.4  27.1    45.3
NEWTON                    | 1995-2010 |  21.7  25.8  33.4  44.3  54.1  63.2  66.0  65.2  56.1  45.1  34.7  25.3    44.6
NEWTON 6 SSE              | 1948-2003 |  20.0  23.8  32.3  43.0  52.5  61.8  65.5  62.8  55.0  43.9  34.1  24.7    43.3
NORMAL                    | 1977-2010 |  16.1  19.6  29.2  40.0  51.0  61.0  64.8  62.7  54.4  42.8  32.4  20.8    41.2
OLIVE BRANCH              | 1983-1999 |  25.3  29.8  36.8  45.0  55.3  63.2  67.4  65.8  57.5  46.2  37.1  28.0    46.5
OLNEY                     | 1901-2010 |  22.3  24.8  34.0  43.9  53.2  62.1  65.7  63.9  56.8  45.2  35.0  25.9    44.4
OTTAWA 4 SW               | 1901-2010 |  15.9  19.0  29.1  39.7  50.0  59.6  63.7  62.0  54.2  42.9  31.9  20.6    40.7
PALESTINE                 | 1901-2010 |  21.9  24.7  33.8  43.9  53.3  62.1  65.5  63.9  56.0  44.8  34.9  25.5    44.2
PANA                      | 1901-2010 |  19.9  23.1  32.2  42.6  52.6  61.6  65.5  63.4  56.3  45.1  34.0  23.9    43.4
PARIS WATERWORKS          | 1901-2010 |  19.2  22.0  31.5  42.0  52.3  61.4  65.0  63.1  55.8  44.5  33.6  23.4    42.8
PARK FOREST               | 1952-2010 |  14.2  18.2  28.0  38.9  48.8  58.8  63.7  62.1  54.2  42.4  31.9  20.1    40.1
PAW PAW 1 E               | 1948-2010 |  10.5  14.5  25.3  36.4  47.1  57.5  61.4  59.1  51.1  39.4  28.7  16.2    37.3
PAXTON                    | 1987-2010 |  16.7  19.1  28.8  39.4  50.5  60.2  63.5  61.0  52.4  40.6  31.8  20.4    40.4
PEORIA WSO AIRPORT        | 1948-2010 |  15.3  19.7  29.5  40.9  51.1  60.8  65.1  63.2  54.8  43.3  31.9  20.6    41.4
PERRY 6 NW                | 1992-2010 |  17.1  21.2  30.4  41.2  51.7  60.9  64.3  62.6  52.4  41.7  32.7  21.9    41.5
PERU                      | 1963-2010 |  13.0  17.3  27.5  38.6  49.0  58.7  62.8  60.8  52.2  41.1  30.9  19.1    39.3
PIPER CITY                | 1949-2010 |  14.4  18.7  28.4  38.6  49.3  59.2  62.7  60.1  52.3  41.4  31.4  20.2    39.7
PITTSFIELD NO 2           | 1991-2010 |  18.5  22.3  30.7  42.1  52.4  62.2  65.2  63.4  54.7  44.0  33.0  21.4    42.5
POLO 5 NW                 | 1995-2010 |  13.3  17.7  26.6  38.1  48.8  58.9  61.4  59.9  50.6  40.2  29.6  17.5    38.5
PONTIAC                   | 1903-2010 |  16.7  20.0  29.7  40.3  50.7  60.5  64.5  62.7  55.2  43.8  32.4  21.4    41.5
 UNKNOWN                  | 2000-2010 |  16.8  17.1  30.5  41.6  51.9  61.8  63.9  63.1  55.3  43.0  33.0  20.2    41.5
PRINCETON                 | 1987-2010 |  16.6  19.8  29.8  40.7  51.3  61.3  64.9  63.5  54.6  43.1  32.0  20.4    41.5
PRINCEVILLE               | 1948-2010 |  12.3  16.7  27.4  38.4  48.9  58.4  61.6  59.5  51.0  40.4  29.8  18.1    38.5
QUINCY                    | 1901-1977 |  18.6  22.2  32.0  43.3  54.0  63.4  67.7  65.7  57.9  46.7  34.0  23.5    44.1
QUINCY FAA AIRPORT        | 1948-2010 |  16.9  21.4  30.7  42.6  52.9  62.1  66.2  64.1  55.5  44.6  32.9  22.0    42.7
QUINCY DAM 21             | 1948-2010 |  17.3  20.6  31.0  42.8  52.9  62.2  66.6  64.8  56.0  44.0  33.6  21.8    42.8
RAMSEY                    | 1990-2010 |  19.6  23.4  31.9  42.4  52.5  61.7  64.9  62.6  53.5  42.5  33.6  23.9    42.7
RANTOUL                   | 1948-2010 |  15.8  19.3  28.9  40.0  50.6  60.7  64.1  61.8  53.7  42.4  31.5  21.1    40.8
REND LAKE DAM             | 1974-2010 |  16.9  22.0  34.9  46.2  55.2  64.2  68.2  66.1  58.4  45.7  37.5  26.1    45.1
ROBERTS 3 N               | 1912-1968 |  17.1  20.1  28.1  39.7  49.8  59.5  62.8  60.4  53.1  43.1  31.0  20.6    40.4
 UNKNOWN                  | 2000-2010 |  20.7  21.1  33.2  43.5  53.2  62.9  64.5  63.1  54.3  42.5  34.1  24.4    43.1
ROCHELLE 6 NW             | 1948-1978 |   8.8  14.3  25.6  37.4  47.8  57.2  60.9  59.1  51.7  41.3  29.0  16.4    37.5
ROCHELLE                  | 1978-2010 |  10.8  15.1  25.9  36.7  47.6  57.8  60.8  59.7  50.7  38.6  28.7  16.1    37.4
ROCKFORD                  | 1905-1957 |  13.8  16.9  26.3  37.2  47.7  57.8  62.1  60.4  52.6  41.5  29.9  18.8    38.7
ROCKFORD WSO AP           | 1951-2010 |  11.4  16.1  26.1  37.5  47.9  57.9  62.5  60.8  52.0  40.7  29.3  17.2    38.3
ROCK ISLAND L&D 15        | 1985-2010 |  16.9  20.1  30.8  42.6  53.3  63.7  67.8  66.0  57.4  45.2  33.4  20.4    43.1
ROMEOVILLE WFO            | 1997-2010 |  17.2  20.6  29.7  40.9  50.5  60.0  64.3  63.2  55.2  43.6  33.4  20.8    41.6
ROSICLARE 5 NW            | 1968-2010 |  22.5  25.8  34.8  43.9  53.0  61.7  66.0  64.3  56.3  44.2  35.9  26.8    44.6
RUSHVILLE                 | 1901-2010 |  17.2  20.8  30.9  41.8  51.8  61.3  65.3  63.2  55.6  44.3  32.4  21.7    42.2
SALEM                     | 1948-2010 |  20.7  24.4  33.7  44.4  53.9  62.7  66.6  64.7  57.0  45.2  35.4  25.3    44.5
SHABBONA 5 NNE (CRN)      | 2003-2010 |  13.3  15.8  28.2  37.4  47.5  58.0  59.6  58.0  49.8  39.0  30.0  15.8    37.7
SHELBYVILLE DAM           | 1987-2010 |  19.3  21.5  32.6  43.4  53.9  63.1  66.1  65.1  56.6  43.8  34.5  24.9    43.7
SIDELL 5 NW               | 1948-2010 |  16.8  17.8  30.1  40.9  51.1  61.6  63.3  62.0  54.0  41.6  33.0  21.8    41.2
SMITHLAND LOCK & DAM      | 1980-2010 |  24.5  27.7  35.9  45.4  55.2  63.8  68.3  67.0  59.1  46.6  37.1  27.6    46.5
SPARTA 3 N                | 1901-2008 |  23.6  26.5  35.2  45.2  54.3  63.2  66.8  65.1  57.8  46.7  36.2  27.0    45.6
SPRINGFIELD WSO AP        | 1948-2010 |  17.8  22.0  31.4  42.5  52.7  62.1  65.8  63.7  55.3  44.4  33.5  22.9    42.8
SPRINGFIELD WB CITY       | 1948-1955 |  23.2  26.8  31.4  43.4  54.2  65.0  68.9  65.5  57.0  47.2  33.4  25.0    45.1
STOCKTON 1 N              | 1948-2010 |  10.2  15.1  25.2  37.0  48.0  57.6  61.4  59.5  51.1  40.4  28.5  15.9    37.5
STREAMWOOD                | 1994-2010 |  12.7  16.0  24.5  34.8  44.8  55.8  60.2  59.1  49.8  38.5  28.0  16.9    36.8
SULLIVAN 5 SSW            | 1948-2010 |  17.5  19.8  30.8  42.7  52.0  61.5  64.1  62.3  53.9  42.5  34.1  23.6    42.1
SYCAMORE                  | 1901-1965 |  12.5  15.1  25.4  35.8  46.5  55.9  60.2  58.7  51.2  40.6  28.6  16.8    37.3
TABLE GROVE               | 1948-1956 |  19.6  23.8  28.7  41.4  52.6  63.0  67.1  63.9  55.4  45.7  31.2  22.0    42.9
TISKILWA 2 SE             | 1948-1990 |  12.8  16.8  28.2  39.2  48.8  58.2  62.4  60.0  52.3  41.0  31.0  18.5    39.1
TUSCOLA                   | 1948-2010 |  18.2  21.7  30.9  41.7  52.0  61.4  64.8  62.4  55.0  43.7  33.1  23.5    42.4
URBANA                    | 1903-2010 |  18.2  21.5  30.9  41.0  51.5  60.7  64.7  62.8  55.4  44.1  32.9  22.6    42.2
UTICA STARVED ROCK DAM    | 1948-2005 |  15.6  20.3  28.2  40.1  50.9  59.2  63.8  61.8  53.5  42.5  32.4  20.2    40.7
VANDALIA                  | 1948-2010 |  19.2  23.3  32.8  43.4  53.3  62.6  66.3  64.4  55.2  43.1  34.4  24.0    43.5
VANDALIA FAA AIRPORT      | 1951-1973 |  18.7  23.0  30.9  42.5  51.4  61.1  64.4  61.9  54.0  42.5  31.6  24.1    42.2
VIRDEN 1 N                | 1948-2010 |  19.1  23.2  32.4  43.6  53.5  62.6  65.8  63.6  56.0  45.3  34.2  23.8    43.6
WALNUT                    | 1901-2010 |  13.7  17.4  27.9  38.9  49.8  59.4  63.5  61.4  53.7  42.3  30.7  18.8    39.8
WATERLOO                  | 1948-2010 |  21.1  25.6  34.9  45.0  54.8  63.5  67.5  65.4  58.0  46.8  36.5  26.1    45.4
WATSEKA 2 NW              | 1948-2010 |  15.8  19.0  28.7  39.2  49.5  59.2  62.6  60.2  52.5  41.5  31.7  20.9    40.1
WAUKEGAN 2 WNW            | 1923-2002 |  13.4  17.2  25.7  36.4  46.2  56.0  61.9  60.8  53.0  42.2  30.4  19.1    38.5
WHEATON 3 SE              | 1948-2007 |  14.6  18.4  27.4  38.1  47.6  57.4  62.4  61.0  53.0  42.2  31.3  20.1    39.5
WHITE HALL 1 E            | 1902-2010 |  18.6  22.1  31.6  42.3  52.2  61.4  65.1  63.4  55.7  44.1  33.0  22.9    42.7
WINCHESTER                | 1997-2010 |  18.8  21.6  31.2  42.5  52.8  62.0  65.1  63.4  54.2  42.8  33.6  22.1    42.5
WINDSOR                   | 1904-2010 |  19.6  22.9  31.9  42.1  52.1  61.1  64.6  62.7  55.7  44.5  33.5  23.8    42.9

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