Hanover, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 28° -33° (1999) 59° (2002) 1.13" NA
February 14° 34° -35° (1996) 69° (2000) 1.58" NA
March 25° 45° -14° (2002) 85° (1986) 2.23" NA
April 36° 60° 12° (1997) 88° (1986) 3.53" NA
May 46° 70° 21° (2005) 92° (1991) 3.94" NA
June 56° 80° 33° (1993) 101° (1988) 5" NA
July 60° 83° 39° (1995) 101° (1989) 3.72" NA
August 58° 82° 37° (1986) 102° (1988) 4.49" NA
September 48° 74° 19° (1995) 94° (2000) 3.29" NA
October 37° 62° 10° (1988) 91° (1997) 2.95" NA
November 27° 47° -2° (1995) 77° (2000) 2.85" NA
December 15° 33° -29° (2000) 68° (1998) 2.04" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 20° 39° 13° (1991) 58° (1998) 0.08" NA
Dec 2 20° 38° 4° (1985) 60° (1998) 0.07" NA
Dec 3 19° 38° -11° (1985) 60° (1998) 0.07" NA
Dec 4 19° 37° -7° (1991) 63° (1998) 0.07" NA
Dec 5 19° 37° -7° (1991) 68° (1998) 0.07" NA
Dec 6 18° 36° -8° (2007) 67° (2001) 0.07" NA
Dec 7 18° 36° 0° (1984) 55° (1998) 0.08" NA
Dec 8 17° 35° 5° (2006) 50° (1999) 0.07" NA
Dec 9 17° 35° -4° (1995) 54° (1991) 0.08" NA
Dec 10 16° 34° -4° (1995) 50° (1993) 0.08" NA
Dec 11 16° 34° -4° (1994) 52° (1984) 0.07" NA
Dec 12 16° 34° -12° (1985) 50° (1987) 0.07" NA
Dec 13 15° 33° -16° (2000) 58° (1991) 0.07" NA
Dec 14 15° 33° -18° (1985) 47° (1998) 0.07" NA
Dec 15 14° 32° -18° (1985) 56° (2006) 0.07" NA
Dec 16 14° 32° -17° (1989) 56° (1984) 0.06" NA
Dec 17 14° 32° -17° (1989) 55° (1984) 0.06" NA
Dec 18 14° 31° -16° (1985) 44° (1997) 0.06" NA
Dec 19 13° 31° -21° (1985) 49° (1998) 0.06" NA
Dec 20 13° 31° -21° (1985) 54° (1988) 0.06" NA
Dec 21 13° 31° -17° (1989) 48° (1988) 0.06" NA
Dec 22 12° 30° -17° (1989) 47° (1994) 0.06" NA
Dec 23 12° 30° -26° (1989) 45° (1988) 0.06" NA
Dec 24 12° 30° -26° (1989) 43° (1988) 0.06" NA
Dec 25 12° 30° -29° (2000) 42° (1994) 0.06" NA
Dec 26 11° 29° -29° (2000) 48° (1994) 0.06" NA
Dec 27 11° 29° -11° (1990) 48° (1994) 0.06" NA
Dec 28 11° 29° -13° (2000) 54° (1984) 0.06" NA
Dec 29 11° 29° -13° (2000) 65° (1984) 0.05" NA
Dec 30 11° 29° -7° (1993) 50° (1999) 0.06" NA
Dec 31 11° 28° -5° (1990) 56° (2004) 0.06" NA
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