ILLINOIS

                                           MONTHLY AVERAGE MAXIMUM TEMPERATURES (F)

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

ALBION                    | 1948-2006 |  39.4  45.1  55.4  68.2  77.6  86.4  89.9  88.6  82.4  71.0  55.8  43.6    67.0
ALEDO                     | 1901-2010 |  31.4  35.6  48.2  62.3  73.2  82.1  86.4  84.3  77.1  65.3  49.3  35.3    60.9
ALTON DAM 26              | 1948-2010 |  37.1  42.0  52.2  64.9  75.2  84.2  88.2  86.8  79.9  68.2  53.9  41.5    64.5
ANNA 1 E                  | 1901-2010 |  43.1  47.3  57.7  68.5  77.3  85.9  89.5  88.3  82.0  71.4  57.5  45.7    67.9
ANTIOCH                   | 1948-2008 |  28.9  33.0  43.0  57.2  68.8  78.4  82.5  80.9  73.6  62.0  46.7  33.5    57.4
ATHENS 2 SW               | 2000-2010 |  35.1  38.5  52.1  66.3  73.6  81.2  84.0  84.4  78.4  65.5  53.9  37.9    62.6
AURORA COLLEGE            | 1901-2010 |  30.9  34.4  46.3  59.9  71.2  80.6  85.0  82.8  75.6  63.8  48.3  34.5    59.5
BARRINGTON                | 1962-2010 |  28.4  32.5  44.4  58.4  69.2  78.7  82.7  80.7  73.5  61.6  47.4  33.0    57.5
BELLEVILLE SIU RESEARCH   | 1948-2010 |  40.2  45.6  55.9  68.0  77.2  85.8  89.1  87.7  81.4  70.7  56.1  43.8    66.8
BENTLEY                   | 1948-2010 |  34.0  40.0  51.4  64.3  74.0  83.1  87.3  86.4  79.8  67.0  53.2  38.6    63.3
BENTON FOREST SERVICE     | 1948-2009 |  40.8  45.5  55.3  67.6  75.8  84.5  89.1  88.5  80.9  68.7  56.0  42.8    66.3
BLOOMINGTON 5 W           | 1999-2010 |  33.7  37.8  51.8  66.1  74.6  83.5  86.2  85.5  79.6  65.6  52.5  36.3    62.8
NORMAL                    | 1901-1977 |  34.3  38.0  49.9  63.5  74.6  83.9  88.2  86.0  79.3  67.7  51.0  37.5    62.8
BROOKPORT DAM 52          | 1948-2010 |  42.9  47.5  57.9  69.4  77.8  85.9  89.5  88.6  81.7  71.1  58.4  46.4    68.1
BROWNSTOWN 4 SW           | 1992-2009 |  36.5  41.6  51.6  64.3  74.5  82.9  86.5  86.0  78.8  67.2  52.5  40.3    63.6
CAHOKIA                   | 1969-2010 |  39.8  44.8  55.9  67.8  76.2  84.7  88.6  87.2  80.5  69.4  56.2  43.6    66.2
CAIRO 3 N                 | 1948-2010 |  42.4  47.4  57.2  69.2  78.3  86.6  89.5  87.9  81.3  70.8  57.2  45.9    67.8
CARBONDALE SEWAGE PLANT   | 1910-2010 |  42.5  47.0  57.0  68.7  77.8  86.5  90.3  89.2  82.7  71.7  57.3  45.7    68.0
CARLINVILLE               | 1901-2010 |  37.7  42.1  53.7  65.9  75.8  84.8  89.1  87.4  80.8  69.2  54.0  41.2    65.1
CARLYLE                   | 1948-1964 |  40.5  46.0  53.5  66.8  78.3  87.1  89.7  88.5  82.7  72.0  55.4  43.9    67.0
CARLYLE RESERVOIR         | 1962-2010 |  36.1  41.3  52.6  65.2  74.5  83.6  87.3  86.1  79.1  67.8  54.3  41.2    64.1
CARMI 3                   | 1987-2010 |  41.9  46.1  56.6  68.5  76.7  85.3  88.0  87.9  81.5  70.0  57.0  44.1    67.0
CASEY                     | 1948-2010 |  34.9  40.3  51.7  62.9  73.7  84.0  87.2  85.9  78.6  65.6  52.4  38.5    63.0
CHAMPAIGN 9 SW (CRN)      | 2002-2010 |  32.6  35.2  52.2  64.8  73.2  81.6  82.5  82.1  78.0  64.9  52.3  34.9    61.2
CHANNAHON DRESDEN ISLAN   | 1948-2010 |  32.8  36.5  48.0  62.1  71.2  80.7  84.4  82.2  78.1  64.2  51.5  36.3    60.7
CHARLESTON                | 1901-2010 |  36.8  40.8  52.4  64.9  75.2  84.0  87.9  86.0  79.9  68.0  52.8  40.1    64.1
CHENOA                    | 1948-2010 |  32.2  37.3  49.0  63.5  74.2  83.3  85.6  83.8  78.4  65.9  50.2  36.6    61.7
CHICAGO BOTANICAL GARDE   | 1981-2010 |  31.8  35.6  45.3  56.6  67.5  77.8  82.7  81.3  74.5  62.6  48.7  35.8    58.3
CHICAGO O'HARE WSO ARPT   | 1958-2010 |  29.8  34.2  45.7  58.9  70.0  79.6  83.7  82.0  75.0  62.9  48.2  34.7    58.7
CHICAGO UNIVERSITY        | 1948-1994 |  31.6  35.6  45.1  57.7  69.2  79.0  83.0  81.7  75.1  63.9  48.7  36.3    58.9
CHICAGO MIDWAY AP 3 SW    | 1928-2010 |  31.5  35.2  45.8  59.0  70.5  80.5  84.6  82.7  75.7  64.1  48.3  35.7    59.5
CHICAGO WB CITY           | 1948-1965 |  32.8  35.6  42.7  56.3  68.3  77.7  81.5  80.5  73.9  63.7  48.2  36.0    58.1
CICERO                    | 1948-1959 |  34.2  37.9  45.5  60.3  73.3  82.0  86.1  84.4  77.2  67.1  49.4  37.0    61.2
COBDEN 2 S                | 1951-1976 |  42.7  47.7  56.2  69.0  77.5  85.7  88.3  87.5  81.8  71.9  57.0  45.7    67.6
COMPTON 1 NW              | 1991-2004 |  28.9  35.1  46.3  59.3  70.9  80.1  83.1  81.8  75.0  63.5  46.4  35.0    58.8
CONGERVILLE 2 NW          | 1990-2010 |  33.6  38.7  50.4  64.4  73.2  81.9  85.4  84.4  80.0  66.8  52.8  37.5    62.4
DANVILLE                  | 1901-2010 |  35.8  39.9  51.4  64.5  75.1  84.0  87.5  85.4  79.3  67.5  52.1  39.4    63.5
DECATUR                   | 1901-2010 |  36.0  40.2  51.9  64.8  75.5  84.4  88.4  86.6  80.4  68.4  52.6  39.6    64.1
DE KALB                   | 1966-2010 |  27.4  32.9  45.4  59.6  71.0  80.7  84.0  81.9  75.5  62.7  46.8  33.1    58.4
DIXON 1 NW                | 1901-2009 |  30.2  34.0  46.1  60.8  72.1  81.2  85.5  83.5  76.2  64.2  48.2  34.1    59.7
DIXON SPRINGS AGR CENTE   | 1967-2010 |  42.6  48.3  58.8  70.0  77.7  85.7  89.0  88.5  82.5  71.9  58.1  46.8    68.3
DU QUOIN 2 S              | 1901-2010 |  41.7  46.0  56.7  68.1  77.5  86.2  90.3  88.8  82.4  71.4  56.8  44.6    67.6
DWIGHT                    | 1990-2010 |  30.2  35.7  47.6  61.4  72.0  81.0  83.4  81.8  76.6  64.0  48.9  35.4    59.8
EAST ST LOUIS PARKS CO    | 1948-1968 |  41.1  46.3  55.9  69.0  79.3  88.0  90.4  90.0  83.5  71.9  56.7  45.2    68.1
EFFINGHAM                 | 1901-2010 |  37.5  41.3  52.4  65.2  75.2  84.7  88.9  87.0  80.5  68.5  53.7  41.0    64.7
ELGIN                     | 1948-2010 |  28.1  33.2  44.9  58.4  69.5  79.5  83.3  81.5  74.9  61.7  47.3  33.0    57.9
ELIZABETH 5 S             | 1984-2010 |  28.8  33.5  45.9  59.7  70.6  80.0  83.2  81.0  74.4  62.0  46.8  32.4    58.2
ELIZABETHTOWN 1 NW        | 1948-1968 |  44.7  49.4  57.5  69.7  78.5  86.2  89.2  88.3  82.1  72.7  57.6  46.4    68.5
FAIRFIELD RADIO WFIW      | 1901-2010 |  40.7  44.7  55.8  67.5  76.8  85.8  89.7  88.4  82.0  70.5  55.8  43.7    66.8
FARMER CITY               | 1948-2010 |  32.8  37.5  49.7  63.4  74.4  83.8  86.0  84.0  78.8  66.6  50.6  37.8    62.1
FLORA                     | 2000-2010 |  38.6  41.8  54.5  68.3  76.2  85.8  88.0  88.6  81.7  68.8  56.0  40.4    65.7
FLORA 5 NW                | 1901-2009 |  40.3  44.1  55.6  67.2  76.5  85.4  89.5  87.9  81.6  70.2  55.5  43.1    66.4
FREEPORT                  | 1909-1973 |  28.8  32.8  44.2  59.6  71.3  80.3  85.1  82.7  74.8  63.4  46.6  33.0    58.6
FREEPORT WASTE WTR PLT    | 1948-2010 |  27.4  32.3  44.5  59.0  70.5  79.8  83.5  81.2  74.1  61.7  46.6  32.0    57.7
FULTON LOCK & DAM #13     | 1948-2010 |  29.0  33.3  44.4  59.3  70.9  80.2  83.9  82.1  74.9  63.5  47.6  33.5    58.6
GALESBURG                 | 1948-2010 |  30.5  35.5  47.3  61.8  72.7  81.7  84.9  83.0  76.1  64.5  48.8  35.0    60.1
GALVA                     | 1901-2010 |  31.1  35.0  47.4  61.4  72.8  82.0  86.3  84.2  77.2  65.2  49.1  35.1    60.6
GEBHARD WOODS STATE PAR   | 1970-1995 |  29.0  34.6  47.7  61.1  73.4  82.9  85.8  83.2  75.9  63.9  49.0  35.2    60.1
GENESEO                   | 1948-2010 |  29.2  34.3  47.0  61.8  73.2  82.2  85.4  83.3  76.1  64.0  48.3  34.2    59.9
GIBSON CITY 1 E           | 1948-2008 |  32.4  36.5  48.2  61.4  72.8  81.8  84.5  83.1  77.5  64.4  49.6  35.8    60.7
GLADSTONE DAM 18          | 1948-2010 |  30.7  36.6  48.3  62.1  72.0  81.5  84.7  83.5  76.8  64.6  49.9  36.3    60.6
GOLCONDA 1 SE             | 1948-1980 |  42.2  47.5  54.5  66.8  77.0  85.1  88.5  87.9  81.2  69.9  54.9  45.4    66.7
GOLDEN                    | 1948-2008 |  33.0  37.8  50.7  63.8  74.0  83.3  87.0  84.9  78.4  67.0  51.0  37.4    62.4
GRAND CHAIN DAM 53        | 1948-2010 |  42.7  46.8  56.2  67.8  76.2  84.1  87.8  88.4  82.5  69.9  57.4  45.0    67.1
 UNKNOWN                  | 2000-2010 |  41.0  42.0  55.8  69.3  76.1  85.9  87.8  88.8  82.6  69.1  58.0  42.4    66.6
GREENVILLE 1 E            | 1901-2010 |  39.9  43.0  54.7  66.1  75.9  84.6  89.7  87.8  81.3  69.9  54.7  42.3    65.8
GRIGGSVILLE               | 1901-2010 |  36.1  40.0  52.2  64.8  75.0  83.8  88.6  86.5  79.6  68.2  53.0  39.8    64.0
HARRISBURG                | 1901-2010 |  43.3  47.3  58.2  69.6  78.8  87.3  91.1  89.9  83.8  72.3  58.2  46.5    68.9
HAVANA                    | 1901-1966 |  35.6  39.3  51.3  64.7  75.7  84.6  89.2  87.2  80.0  68.2  52.0  38.7    63.9
HAVANA 4 NNE              | 1948-2010 |  33.4  38.6  51.1  64.6  74.3  84.0  88.2  85.9  79.6  67.2  51.4  38.1    63.0
HENNEPIN POWER PLANT      | 1962-2009 |  31.4  36.1  48.6  62.7  73.8  83.0  86.2  84.2  77.9  65.7  50.0  36.0    61.3
HILLSBORO 2 SSW           | 1901-2010 |  38.5  42.8  54.5  66.5  76.2  85.0  89.4  87.7  81.2  69.7  54.5  41.6    65.6
HOOPESTON                 | 1902-2010 |  33.9  37.8  49.6  62.8  73.8  82.9  86.5  84.4  78.2  65.9  50.5  37.3    62.0
ILLINOIS CITY DAM 16      | 1948-2010 |  30.8  33.7  49.0  63.5  72.9  81.9  84.1  83.2  78.1  63.9  51.9  33.0    60.5
IUKA 7 SW                 | 1997-2010 |  39.2  43.2  53.8  66.7  74.9  83.8  87.0  87.7  81.4  68.9  56.5  41.6    65.4
JACKSONVILLE 2 E          | 1901-2010 |  36.0  40.2  52.1  64.8  75.0  83.9  88.0  86.1  79.8  68.2  53.1  39.8    63.9
JERSEYVILLE 2 SW          | 1948-2010 |  37.2  42.4  53.0  66.0  75.5  84.1  88.0  86.5  80.2  68.8  53.9  41.4    64.7
JOLIET BRANDON RD DAM     | 1948-2010 |  30.2  35.2  47.1  60.6  71.3  81.0  84.4  82.4  76.3  63.6  49.4  35.4    59.7
JOLIET                    | 1901-1974 |  32.2  36.5  46.2  62.4  73.5  83.2  86.1  84.6  78.2  67.7  50.0  36.7    61.4
KANKAKEE 3 SW             | 1917-1973 |  33.3  37.1  48.0  61.5  73.1  82.8  86.7  84.5  78.3  66.7  49.5  36.8    61.5
KANKAKEE 4 NW             | 1948-1960 |  34.2  37.0  46.6  61.5  73.3  81.9  85.0  83.2  77.1  66.7  48.9  37.4    61.1
KANKAKEE SEWAGE PLANT     | 1948-2010 |  31.5  36.1  48.1  61.1  72.4  82.1  85.4  83.4  77.6  64.8  50.4  36.3    60.8
KASKASKIA R NAV LOCK      | 1974-2010 |  40.7  45.6  56.8  68.7  78.3  86.9  91.1  89.7  82.0  70.4  57.3  44.1    67.6
KEWANEE                   | 1948-2010 |  29.8  34.5  46.4  61.7  72.6  81.6  84.9  83.2  76.3  64.4  48.4  34.8    59.9
LACON 1 N                 | 1950-2009 |  32.3  37.3  49.6  64.3  74.7  83.7  86.8  85.2  78.7  66.3  50.8  37.4    62.3
LA HARPE 1 SW             | 1901-2010 |  33.8  37.8  50.1  63.5  74.1  82.9  87.5  85.5  78.4  66.9  51.1  37.5    62.4
LAKE VILLA 2 NE           | 1985-2005 |  29.9  34.4  44.3  57.0  68.4  78.4  82.2  80.1  72.9  59.9  46.6  33.9    57.3
LA SALLE PERU             | 1948-1963 |  32.3  37.0  46.2  62.8  75.2  84.5  87.4  86.3  78.8  67.1  49.5  36.9    62.0
LAWRENCEVILLE             | 1967-2010 |  38.5  43.4  54.3  65.1  75.7  84.9  87.8  87.1  81.0  69.3  55.4  42.7    65.4
LINCOLN                   | 1906-2010 |  34.7  39.1  50.7  64.2  74.9  83.9  87.7  85.5  79.2  67.2  51.8  38.7    63.1
MAKANDA 1 NW              | 1951-1976 |  42.4  47.5  56.0  68.8  77.2  85.4  88.3  87.2  81.1  71.2  56.6  45.5    67.3
MARENGO                   | 1901-2010 |  28.9  32.2  44.0  58.7  70.5  80.3  85.0  82.7  75.2  63.0  46.8  32.8    58.3
MARION 4 NNE              | 1948-1998 |  38.3  43.9  54.6  66.0  74.9  83.2  87.3  86.0  79.3  68.1  54.6  43.2    65.0
MARSEILLES LOCK           | 1948-2010 |  30.5  35.4  48.0  62.3  72.4  80.1  83.7  81.8  77.2  63.6  50.3  34.8    60.0
MARSHALL                  | 1948-2004 |  37.5  42.0  53.0  66.3  76.0  84.9  87.4  85.6  79.7  69.9  54.2  41.1    64.8
MASON CITY 1 W            | 1948-2010 |  32.5  38.3  51.1  65.0  74.9  83.8  86.5  84.6  78.6  66.9  51.4  37.1    62.6
MATTOON                   | 1948-2010 |  34.6  39.7  50.0  63.5  74.3  83.5  86.6  84.8  78.7  66.7  51.1  38.7    62.7
MCHENRY LOCK & DAM        | 1948-2010 |  28.6  32.8  44.1  58.1  67.9  78.1  82.0  80.2  73.6  61.5  46.9  33.1    57.2
MC LEANSBORO 2 E          | 1901-2002 |  41.4  45.5  56.0  67.3  77.1  85.9  90.2  88.9  82.6  71.2  56.5  44.5    67.3
MINONK                    | 1901-2010 |  32.2  36.2  48.5  62.4  73.8  83.2  87.1  85.2  78.7  66.4  50.0  36.1    61.6
MOLINE WSO AP             | 1948-2010 |  29.7  34.8  46.8  61.7  72.8  82.2  85.6  83.6  76.3  64.6  48.6  34.5    60.1
MONMOUTH                  | 1901-2010 |  32.4  36.7  49.3  63.2  74.0  82.7  87.0  85.2  78.1  66.2  50.0  36.2    61.7
MONMOUTH 4 NW             | 1995-2010 |  30.9  35.8  47.4  61.3  71.6  80.7  84.2  83.5  77.1  64.8  49.9  35.4    60.2
MORRIS 5 N                | 1948-2010 |  31.6  36.0  46.7  62.0  73.0  82.1  84.8  83.2  77.9  66.1  49.8  36.1    60.8
MORRISON                  | 1901-2010 |  30.8  34.9  47.2  61.6  72.9  81.7  86.2  84.0  76.9  65.3  49.1  34.9    60.5
MORRISONVILLE             | 1948-2010 |  34.4  39.1  50.6  63.9  74.0  82.9  86.1  85.1  79.5  66.8  52.5  38.7    62.8
MORRISONVILLE 4 SE        | 1901-1971 |  37.3  40.5  52.0  64.3  74.4  83.6  88.2  86.4  80.1  68.7  52.9  40.2    64.0
MOUNT CARMEL              | 1948-2010 |  40.2  44.0  54.6  66.8  76.7  85.8  88.8  87.7  81.4  69.7  56.2  43.5    66.3
MOUNT CARMEL 3 N          | 1902-1977 |  41.5  44.6  56.2  67.7  77.4  86.1  90.1  88.4  82.3  71.0  56.3  43.9    67.1
MOUNT CARROLL             | 1901-2010 |  29.7  33.7  45.8  60.5  71.8  81.0  85.3  83.2  75.5  63.7  47.5  33.5    59.3
MT VERNON 3 NE            | 1901-2010 |  40.2  44.1  55.0  66.8  76.4  85.5  89.5  88.2  81.6  70.2  55.6  43.2    66.4
MOWEAQUA                  | 1963-2010 |  34.5  40.1  51.8  65.1  75.4  84.0  87.5  85.3  79.7  68.2  52.4  39.6    63.6
MUNDELEIN 4 WSW           | 1999-2010 |  30.3  33.3  45.5  59.2  67.8  77.7  82.1  81.2  74.8  61.3  48.7  33.4    57.9
NASHVILLE 4 NE            | 1948-2010 |  38.2  43.5  55.2  66.8  75.9  84.8  87.9  86.5  80.0  69.0  55.0  42.6    65.5
NEW BOSTON DAM 17         | 1948-2010 |  31.6  36.4  49.1  63.8  72.8  81.9  85.9  84.0  77.8  64.2  51.1  35.8    61.2
NEW BURNSIDE              | 1901-1964 |  44.5  47.7  58.4  68.3  77.7  86.3  90.5  89.3  83.6  72.9  57.9  46.0    68.6
NEWTON                    | 1995-2010 |  38.1  42.7  53.3  65.9  75.0  84.2  87.1  86.7  80.9  68.6  54.6  41.2    64.9
NEWTON 6 SSE              | 1948-2003 |  36.9  42.4  52.3  65.2  75.4  84.2  87.9  86.4  80.4  68.9  53.7  41.2    64.6
NORMAL                    | 1977-2010 |  32.8  37.8  49.5  63.0  73.9  83.4  86.1  84.5  78.6  65.8  50.9  37.2    61.9
OLIVE BRANCH              | 1983-1999 |  43.0  49.3  58.6  68.8  77.6  85.2  88.5  87.7  80.9  71.3  56.9  45.6    67.8
OLNEY                     | 1901-2010 |  39.6  43.5  54.7  66.4  76.4  85.4  89.2  87.9  81.8  70.2  55.2  42.6    66.1
OTTAWA 4 SW               | 1901-2010 |  32.7  36.6  48.6  62.8  73.9  82.8  86.9  84.9  78.1  66.3  50.3  36.4    61.7
PALESTINE                 | 1901-2010 |  39.2  43.1  54.5  66.6  76.6  85.8  89.3  87.8  81.5  69.8  54.8  42.4    65.9
PANA                      | 1901-2010 |  36.8  40.9  52.5  65.1  75.1  83.9  88.0  86.0  79.8  68.0  52.9  40.1    64.1
PARIS WATERWORKS          | 1901-2010 |  36.0  39.8  51.4  64.0  74.7  83.7  87.5  85.8  79.6  67.6  52.4  39.5    63.5
PARK FOREST               | 1952-2010 |  30.0  34.8  45.4  59.3  70.3  80.3  83.8  82.0  75.4  63.4  48.6  35.2    59.0
PAW PAW 1 E               | 1948-2010 |  26.7  31.3  43.8  58.6  70.0  79.7  82.7  80.3  74.0  62.0  46.3  31.7    57.2
PAXTON                    | 1987-2010 |  32.3  36.0  48.1  61.8  72.3  81.3  83.9  82.8  77.8  64.5  50.3  35.7    60.6
PEORIA WSO AIRPORT        | 1948-2010 |  31.4  36.4  48.3  62.3  72.9  82.1  85.5  83.6  76.8  64.8  49.4  35.9    60.8
PERRY 6 NW                | 1992-2010 |  35.4  40.7  51.8  64.3  73.6  82.7  86.5  86.0  78.4  66.8  52.9  39.8    63.2
PERU                      | 1963-2010 |  30.0  35.1  47.4  61.9  73.0  82.2  85.4  83.3  77.1  65.0  49.2  35.1    60.4
PIPER CITY                | 1949-2010 |  31.5  36.8  49.2  63.4  74.6  83.4  86.0  84.0  78.3  65.5  50.2  36.3    61.6
PITTSFIELD NO 2           | 1991-2010 |  36.1  40.6  51.7  64.8  73.8  82.2  85.6  85.5  80.0  67.8  53.2  39.1    63.4
POLO 5 NW                 | 1995-2010 |  30.2  35.5  47.7  62.3  72.3  81.5  84.3  83.0  77.1  64.1  48.9  34.0    60.1
PONTIAC                   | 1903-2010 |  32.8  36.9  48.8  62.7  73.7  82.7  86.4  84.3  78.2  66.2  50.4  36.7    61.6
 UNKNOWN                  | 2000-2010 |  34.1  37.0  52.3  66.3  74.5  83.5  86.2  84.7  78.6  66.0  54.2  37.3    62.9
PRINCETON                 | 1987-2010 |  30.7  34.9  47.9  61.8  72.6  81.9  84.8  82.6  75.8  62.9  48.1  34.1    59.8
PRINCEVILLE               | 1948-2010 |  30.6  36.1  49.0  63.2  73.3  81.9  85.0  83.2  76.8  64.8  50.0  35.6    60.8
QUINCY                    | 1901-1977 |  36.1  40.5  52.3  65.2  75.8  84.9  90.0  87.8  80.1  68.3  52.7  39.7    64.4
QUINCY FAA AIRPORT        | 1948-2010 |  33.3  38.4  49.5  63.2  73.2  82.3  86.4  84.5  77.5  66.0  51.0  37.7    61.9
QUINCY DAM 21             | 1948-2010 |  34.2  38.7  50.7  64.1  73.6  82.8  87.2  85.7  78.8  66.3  52.8  38.6    62.8
RAMSEY                    | 1990-2010 |  35.6  41.1  51.8  64.8  74.0  82.7  86.2  86.1  79.7  67.8  53.3  40.1    63.6
RANTOUL                   | 1948-2010 |  33.0  37.3  48.5  62.6  74.0  83.4  86.3  84.6  78.5  66.2  50.5  37.4    61.9
REND LAKE DAM             | 1974-2010 |  35.4  40.4  54.4  67.2  76.1  85.3  89.0  87.5  80.3  68.3  56.4  42.6    65.2
ROBERTS 3 N               | 1912-1968 |  34.0  37.5  47.3  62.2  74.0  83.5  85.9  83.9  78.7  68.2  50.3  37.0    61.9
 UNKNOWN                  | 2000-2010 |  37.9  39.6  54.0  66.7  74.8  85.1  86.8  87.0  81.3  67.5  55.9  41.4    64.8
ROCHELLE 6 NW             | 1948-1978 |  26.9  32.4  44.1  60.1  71.5  80.2  83.2  81.7  75.0  64.0  47.0  32.9    58.3
ROCHELLE                  | 1978-2010 |  28.1  32.3  45.1  59.1  70.5  80.0  83.0  81.5  74.9  62.3  47.2  32.8    58.1
ROCKFORD                  | 1905-1957 |  31.3  34.3  45.5  60.0  71.7  81.2  86.7  84.5  76.6  64.5  47.8  34.3    59.9
ROCKFORD WSO AP           | 1951-2010 |  27.7  32.7  44.4  59.3  70.9  80.3  83.8  81.8  74.7  62.5  46.6  32.6    58.1
ROCK ISLAND L&D 15        | 1985-2010 |  32.1  35.7  48.8  62.4  72.2  81.4  84.5  83.0  76.8  64.4  49.6  34.9    60.5
ROMEOVILLE WFO            | 1997-2010 |  31.8  36.6  48.4  62.2  71.7  80.2  83.9  82.1  76.7  63.4  50.1  35.3    60.2
ROSICLARE 5 NW            | 1968-2010 |  41.9  47.3  58.0  69.3  76.7  84.3  87.9  87.4  81.0  70.3  57.7  46.1    67.3
RUSHVILLE                 | 1901-2010 |  34.5  39.1  50.9  64.0  74.2  83.1  87.6  85.8  78.9  67.3  51.8  38.3    63.0
SALEM                     | 1948-2010 |  38.0  43.1  54.5  67.2  76.4  85.2  88.4  87.3  80.7  69.2  55.0  42.1    65.6
SHABBONA 5 NNE (CRN)      | 2003-2010 |  27.9  30.9  46.5  61.4  70.3  79.2  80.6  78.9  75.0  62.0  48.4  30.7    57.7
SHELBYVILLE DAM           | 1987-2010 |  35.8  39.7  52.5  64.9  74.7  83.0  86.4  86.1  80.6  66.6  53.3  40.3    63.7
SIDELL 5 NW               | 1948-2010 |  32.8  35.2  50.5  64.6  73.3  83.3  84.9  84.7  79.6  65.5  52.4  36.8    62.0
SMITHLAND LOCK & DAM      | 1980-2010 |  42.3  47.4  57.0  68.4  76.8  84.8  88.6  88.1  81.2  69.9  58.0  45.5    67.3
SPARTA 3 N                | 1901-2008 |  41.5  46.0  56.7  68.1  77.3  86.2  90.5  89.0  82.5  71.4  56.6  44.3    67.5
SPRINGFIELD WSO AP        | 1948-2010 |  34.0  38.9  50.4  64.1  74.8  83.6  86.6  84.7  78.9  67.0  51.7  38.5    62.8
SPRINGFIELD WB CITY       | 1948-1955 |  38.6  42.9  48.9  63.6  75.9  85.3  88.8  86.0  79.6  68.5  50.8  39.9    64.1
STOCKTON 1 N              | 1948-2010 |  26.8  31.8  43.2  58.8  70.4  79.2  82.6  80.7  73.3  61.8  45.4  31.3    57.1
STREAMWOOD                | 1994-2010 |  31.8  37.0  47.9  61.1  71.6  82.3  86.2  84.5  77.5  64.4  49.9  35.9    60.8
SULLIVAN 5 SSW            | 1948-2010 |  33.4  37.7  50.8  65.7  73.3  82.3  85.0  84.9  79.5  65.8  53.7  39.0    62.6
SYCAMORE                  | 1901-1965 |  30.2  33.0  44.8  59.3  71.5  81.0  86.2  84.1  76.2  64.3  47.6  33.5    59.3
TABLE GROVE               | 1948-1956 |  36.7  40.8  48.0  63.1  74.4  83.8  87.9  85.8  79.0  68.8  51.0  38.6    63.2
TISKILWA 2 SE             | 1948-1990 |  30.6  35.5  48.1  62.9  74.3  83.1  86.7  84.3  77.7  65.2  49.6  35.0    61.1
TUSCOLA                   | 1948-2010 |  35.0  39.9  51.4  65.5  76.0  84.9  87.6  85.8  80.4  68.2  52.5  39.7    63.9
URBANA                    | 1903-2010 |  33.8  37.6  49.3  62.0  73.0  82.3  85.8  83.9  78.0  65.9  50.3  37.5    61.6
UTICA STARVED ROCK DAM    | 1948-2005 |  31.3  37.1  47.6  62.6  72.8  79.7  85.2  82.8  77.9  64.1  50.7  36.6    60.7
VANDALIA                  | 1948-2010 |  35.7  41.3  52.4  65.2  74.5  83.5  87.3  86.3  79.5  67.2  53.8  40.7    63.9
VANDALIA FAA AIRPORT      | 1951-1973 |  36.9  41.8  51.2  65.1  75.1  85.0  87.7  86.3  80.7  68.8  52.5  41.0    64.3
VIRDEN 1 N                | 1948-2010 |  35.8  40.7  52.2  65.9  75.8  84.3  87.5  85.9  80.1  68.2  52.8  39.7    64.1
WALNUT                    | 1901-2010 |  30.5  34.4  46.8  61.5  73.2  82.3  86.4  84.0  76.6  64.7  48.5  34.4    60.3
WATERLOO                  | 1948-2010 |  38.6  44.6  55.4  67.1  76.5  84.8  88.8  87.2  80.5  69.8  55.4  43.0    66.0
WATSEKA 2 NW              | 1948-2010 |  31.9  36.5  47.9  61.6  72.9  82.2  84.8  83.1  77.5  65.4  49.9  36.4    60.8
WAUKEGAN 2 WNW            | 1923-2002 |  29.5  33.4  42.5  55.3  67.1  77.0  81.5  79.9  72.8  62.0  47.0  34.1    56.8
WHEATON 3 SE              | 1948-2007 |  31.3  36.5  47.7  62.2  73.5  82.8  86.0  84.1  77.6  65.5  49.2  36.0    61.0
WHITE HALL 1 E            | 1902-2010 |  37.2  41.8  53.4  65.7  75.4  84.1  88.3  86.6  80.2  68.9  53.9  40.9    64.7
WINCHESTER                | 1997-2010 |  36.3  40.9  53.4  66.5  75.5  83.2  86.8  86.6  80.8  68.0  55.7  39.7    64.5
WINDSOR                   | 1904-2010 |  36.5  40.8  52.2  65.0  75.1  84.2  88.1  86.4  80.4  68.4  52.7  40.1    64.2

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