Standard, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 30° -26° (1985) 66° (2008) 1.52" 8.1"
February 18° 36° -21° (1979) 72° (1976) 1.66" 5.2"
March 28° 48° -8° (2002) 82° (1998) 2.68" 3.3"
April 39° 62° 13° (1982) 91° (1987) 3.38" 0.4"
May 49° 73° 25° (1989) 94° (2006) 4.46" 0"
June 59° 82° 37° (1969) 101° (1988) 3.82" 0"
July 63° 85° 42° (1972) 104° (1983) 4.47" 0"
August 61° 83° 40° (1986) 103° (1988) 4.17" 0"
September 52° 77° 27° (1974) 98° (2000) 3.33" 0"
October 41° 64° 16° (1988) 91° (2007) 3.09" 0.1"
November 31° 49° -5° (1977) 79° (2000) 3.07" 0.6"
December 18° 34° -21° (1989) 70° (1970) 2.36" 8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 15° 31° -13° (1996) 70° (1989) 0.04" 0.2"
Feb 2 15° 32° -16° (1996) 51° (1990) 0.04" 0.2"
Feb 3 15° 32° -20° (1996) 53° (1987) 0.05" 0.2"
Feb 4 15° 32° -19° (1996) 56° (1992) 0.04" 0.2"
Feb 5 16° 32° -21° (1979) 56° (2005) 0.04" 0.2"
Feb 6 16° 32° -16° (1982) 56° (2005) 0.04" 0.2"
Feb 7 16° 33° -13° (1972) 52° (1965) 0.05" 0.2"
Feb 8 16° 33° -9° (1985) 60° (2009) 0.05" 0.2"
Feb 9 16° 33° -18° (1979) 62° (1990) 0.05" 0.2"
Feb 10 17° 34° -11° (1982) 61° (1976) 0.05" 0.2"
Feb 11 17° 34° -9° (1986) 63° (2009) 0.05" 0.2"
Feb 12 17° 34° -13° (1981) 69° (1999) 0.06" 0.2"
Feb 13 17° 34° -9° (1986) 61° (1990) 0.05" 0.2"
Feb 14 18° 35° -6° (1986) 58° (1976) 0.06" 0.2"
Feb 15 18° 35° -9° (2007) 68° (1976) 0.05" 0.1"
Feb 16 18° 36° -8° (2007) 65° (1976) 0.06" 0.2"
Feb 17 19° 36° -8° (1973) 52° (1974) 0.06" 0.2"
Feb 18 19° 36° -7° (1978) 57° (1981) 0.06" 0.2"
Feb 19 19° 37° -13° (1979) 59° (1981) 0.06" 0.1"
Feb 20 20° 37° -1° (2006) 60° (1981) 0.06" 0.2"
Feb 21 20° 37° -4° (1968) 64° (1983) 0.07" 0.2"
Feb 22 20° 38° -5° (1978) 59° (1991) 0.06" 0.2"
Feb 23 21° 38° -6° (1989) 63° (2000) 0.07" 0.1"
Feb 24 21° 39° -8° (1989) 65° (1976) 0.08" 0.2"
Feb 25 21° 39° -6° (1967) 68° (1976) 0.07" 0.2"
Feb 26 22° 40° -5° (2003) 71° (2000) 0.07" 0.2"
Feb 27 22° 40° -7° (1994) 72° (1976) 0.08" 0.1"
Feb 28 22° 41° -1° (1994) 64° (1976) 0.07" 0.2"
Feb 29 22° 41° 8° (1968) 66° (1972) 0.07" NA
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