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
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