Half Day, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 30° -27° (1982) 63° (1997) 1.89" NA
February 18° 35° -20° (1996) 74° (2000) 1.56" NA
March 28° 45° -5° (2002) 83° (1986) 2.5" NA
April 37° 56° 10° (1982) 90° (2002) 3.7" NA
May 47° 67° 28° (2004) 93° (1991) 3.59" NA
June 56° 78° 37° (1993) 102° (1988) 3.86" NA
July 63° 83° 45° (1982) 105° (1995) 3.5" NA
August 62° 81° 42° (1986) 101° (1991) 4.84" NA
September 54° 75° 30° (1995) 97° (1990) 3.24" NA
October 42° 63° 24° (1992) 89° (2007) 2.7" NA
November 32° 49° 6° (1986) 76° (1999) 3.22" NA
December 20° 36° -20° (1983) 70° (2001) 2.2" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 60° 82° 45° (1982) 95° (2002) 0.12" NA
Jul 2 60° 82° 48° (1988) 96° (1991) 0.11" NA
Jul 3 61° 82° 50° (1986) 94° (2002) 0.11" NA
Jul 4 61° 82° 50° (1996) 97° (2002) 0.11" NA
Jul 5 61° 82° 49° (1997) 98° (1990) 0.11" NA
Jul 6 61° 82° 47° (1983) 97° (1994) 0.11" NA
Jul 7 61° 83° 47° (1983) 98° (1988) 0.11" NA
Jul 8 62° 83° 48° (1984) 95° (1988) 0.11" NA
Jul 9 62° 83° 50° (2000) 97° (1988) 0.11" NA
Jul 10 62° 83° 48° (1997) 98° (1989) 0.1" NA
Jul 11 62° 83° 50° (1996) 100° (1989) 0.1" NA
Jul 12 62° 83° 49° (1996) 93° (1987) 0.1" NA
Jul 13 62° 83° 53° (2007) 95° (1995) 0.1" NA
Jul 14 63° 83° 52° (2002) 105° (1995) 0.1" NA
Jul 15 63° 83° 53° (1991) 102° (1995) 0.11" NA
Jul 16 63° 83° 52° (1987) 103° (1988) 0.11" NA
Jul 17 63° 84° 53° (1985) 96° (1997) 0.11" NA
Jul 18 63° 84° 57° (1984) 98° (2006) 0.11" NA
Jul 19 63° 84° 53° (1984) 98° (1991) 0.11" NA
Jul 20 63° 84° 55° (2000) 100° (1991) 0.11" NA
Jul 21 63° 84° 51° (2007) 99° (1991) 0.11" NA
Jul 22 63° 84° 52° (1992) 101° (2002) 0.11" NA
Jul 23 63° 84° 53° (2000) 100° (1991) 0.11" NA
Jul 24 63° 84° 51° (2000) 96° (1999) 0.12" NA
Jul 25 64° 84° 54° (2003) 103° (2005) 0.12" NA
Jul 26 64° 84° 54° (1991) 93° (1999) 0.12" NA
Jul 27 64° 84° 51° (1991) 96° (1997) 0.12" NA
Jul 28 64° 84° 52° (2005) 92° (1988) 0.13" NA
Jul 29 64° 83° 51° (2003) 98° (1983) 0.13" NA
Jul 30 64° 83° 52° (1984) 98° (1999) 0.13" NA
Jul 31 64° 83° 54° (1997) 104° (1999) 0.14" NA
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