Hanover, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -33° (1999) 59° (2002) 1.12" NA
February 10° 34° -35° (1996) 69° (2000) 1.24" NA
March 22° 45° -14° (2002) 85° (1986) 2.58" NA
April 32° 59° 12° (1997) 88° (1986) 3.38" NA
May 43° 71° 21° (2005) 92° (1991) 3.57" NA
June 53° 80° 33° (1993) 101° (1988) 5.07" NA
July 57° 84° 39° (1995) 101° (1989) 2.9" NA
August 55° 81° 37° (1986) 102° (1988) 4.45" NA
September 46° 74° 19° (1995) 94° (2000) 3.63" NA
October 34° 62° 10° (1988) 91° (1997) 2.51" NA
November 24° 46° -2° (1995) 77° (2000) 2.71" NA
December 12° 33° -29° (2000) 68° (1998) 1.77" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 18° 38° 13° (1991) 58° (1998) 0.08" NA
Dec 2 17° 38° 4° (1985) 60° (1998) 0.08" NA
Dec 3 17° 37° -11° (1985) 60° (1998) 0.07" NA
Dec 4 16° 37° -7° (1991) 63° (1998) 0.07" NA
Dec 5 16° 36° -7° (1991) 68° (1998) 0.07" NA
Dec 6 16° 36° -8° (2007) 67° (2001) 0.07" NA
Dec 7 15° 36° 0° (1984) 55° (1998) 0.07" NA
Dec 8 15° 35° 5° (2006) 50° (1999) 0.07" NA
Dec 9 14° 35° -4° (1995) 54° (1991) 0.07" NA
Dec 10 14° 34° -4° (1995) 50° (1993) 0.06" NA
Dec 11 13° 34° -4° (1994) 52° (1984) 0.06" NA
Dec 12 13° 34° -12° (1985) 50° (1987) 0.06" NA
Dec 13 13° 33° -16° (2000) 58° (1991) 0.06" NA
Dec 14 12° 33° -18° (1985) 47° (1998) 0.06" NA
Dec 15 12° 33° -18° (1985) 56° (2006) 0.06" NA
Dec 16 11° 32° -17° (1989) 56° (1984) 0.06" NA
Dec 17 11° 32° -17° (1989) 55° (1984) 0.05" NA
Dec 18 11° 32° -16° (1985) 44° (1997) 0.05" NA
Dec 19 10° 31° -21° (1985) 49° (1998) 0.05" NA
Dec 20 10° 31° -21° (1985) 54° (1988) 0.05" NA
Dec 21 10° 31° -17° (1989) 48° (1988) 0.05" NA
Dec 22 30° -17° (1989) 47° (1994) 0.05" NA
Dec 23 30° -26° (1989) 45° (1988) 0.05" NA
Dec 24 30° -26° (1989) 43° (1988) 0.05" NA
Dec 25 29° -29° (2000) 42° (1994) 0.05" NA
Dec 26 29° -29° (2000) 48° (1994) 0.05" NA
Dec 27 29° -11° (1990) 48° (1994) 0.04" NA
Dec 28 29° -13° (2000) 54° (1984) 0.04" NA
Dec 29 28° -13° (2000) 65° (1984) 0.04" NA
Dec 30 28° -7° (1993) 50° (1999) 0.04" NA
Dec 31 28° -5° (1990) 56° (2004) 0.04" NA
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