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
Feb 1 15° 32° -10° (1994) 65° (1989) 0.06" NA
Feb 2 15° 32° -16° (1996) 51° (1990) 0.06" NA
Feb 3 15° 32° -20° (1996) 52° (1991) 0.06" NA
Feb 4 15° 32° -18° (1996) 57° (1992) 0.06" NA
Feb 5 15° 32° -13° (1996) 53° (2005) 0.06" NA
Feb 6 16° 33° -11° (1982) 60° (2005) 0.05" NA
Feb 7 16° 33° -5° (1982) 49° (1999) 0.05" NA
Feb 8 16° 33° -4° (2007) 51° (1987) 0.05" NA
Feb 9 16° 33° -2° (1989) 61° (1990) 0.05" NA
Feb 10 17° 34° -10° (1982) 55° (1999) 0.05" NA
Feb 11 17° 34° -9° (1994) 62° (1999) 0.05" NA
Feb 12 17° 34° -2° (1995) 70° (1999) 0.05" NA
Feb 13 17° 34° -4° (1988) 60° (1984) 0.05" NA
Feb 14 18° 35° 0° (1988) 51° (1984) 0.05" NA
Feb 15 18° 35° 0° (2007) 57° (1984) 0.05" NA
Feb 16 18° 35° -4° (2004) 57° (1984) 0.05" NA
Feb 17 19° 36° 0° (2007) 45° (1994) 0.05" NA
Feb 18 19° 36° -8° (2006) 55° (1994) 0.06" NA
Feb 19 19° 36° -6° (2006) 58° (1994) 0.06" NA
Feb 20 20° 36° 5° (1993) 61° (1994) 0.06" NA
Feb 21 20° 37° -5° (1988) 63° (1983) 0.06" NA
Feb 22 20° 37° 10° (1988) 59° (1991) 0.06" NA
Feb 23 21° 37° 4° (1989) 62° (1984) 0.06" NA
Feb 24 21° 38° -5° (1989) 68° (2000) 0.06" NA
Feb 25 21° 38° -5° (1993) 62° (2002) 0.06" NA
Feb 26 22° 38° 3° (2003) 74° (2000) 0.06" NA
Feb 27 22° 39° -5° (1994) 66° (2000) 0.06" NA
Feb 28 22° 39° 4° (1994) 53° (2000) 0.06" NA
Feb 29 22° 39° 9° (1996) 57° (2004) 0.06" NA
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