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
Oct 1 47° 69° 31° (2003) 86° (2002) 0.09" NA
Oct 2 47° 69° 29° (2003) 84° (2002) 0.09" NA
Oct 3 47° 69° 33° (2003) 83° (1983) 0.08" NA
Oct 4 46° 68° 32° (1989) 88° (1997) 0.08" NA
Oct 5 46° 68° 29° (2004) 82° (2007) 0.08" NA
Oct 6 45° 67° 31° (2001) 88° (1997) 0.08" NA
Oct 7 45° 67° 26° (2001) 88° (2007) 0.08" NA
Oct 8 44° 67° 28° (1987) 89° (2007) 0.08" NA
Oct 9 44° 66° 28° (2000) 87° (2007) 0.08" NA
Oct 10 44° 66° 28° (1993) 76° (2007) 0.08" NA
Oct 11 43° 65° 29° (1996) 79° (1999) 0.08" NA
Oct 12 43° 65° 26° (1987) 79° (1995) 0.08" NA
Oct 13 43° 64° 28° (2006) 83° (1995) 0.08" NA
Oct 14 42° 64° 30° (2002) 84° (1995) 0.08" NA
Oct 15 42° 64° 27° (2006) 84° (1989) 0.08" NA
Oct 16 42° 63° 27° (1991) 83° (1989) 0.08" NA
Oct 17 41° 63° 26° (1992) 79° (1998) 0.09" NA
Oct 18 41° 62° 27° (1992) 79° (1990) 0.09" NA
Oct 19 41° 62° 24° (1992) 78° (2007) 0.09" NA
Oct 20 40° 61° 27° (1992) 79° (1995) 0.09" NA
Oct 21 40° 61° 26° (1982) 84° (2003) 0.09" NA
Oct 22 40° 60° 25° (1982) 80° (2007) 0.09" NA
Oct 23 39° 60° 26° (1982) 76° (1991) 0.09" NA
Oct 24 39° 59° 27° (1982) 76° (1991) 0.09" NA
Oct 25 39° 59° 25° (2006) 77° (1989) 0.09" NA
Oct 26 38° 59° 27° (1990) 78° (1989) 0.09" NA
Oct 27 38° 58° 30° (1994) 77° (2000) 0.1" NA
Oct 28 38° 58° 26° (1997) 76° (1989) 0.1" NA
Oct 29 38° 57° 28° (1987) 78° (1999) 0.1" NA
Oct 30 37° 57° 31° (2006) 79° (1999) 0.1" NA
Oct 31 37° 56° 25° (1996) 78° (1999) 0.1" NA
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