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
Apr 1 28° 52° 19° (1989) 80° (1986) 0.11" NA
Apr 2 28° 53° 17° (1993) 70° (1999) 0.11" NA
Apr 3 28° 53° 18° (1987) 74° (1999) 0.11" NA
Apr 4 29° 54° 17° (1987) 70° (1999) 0.11" NA
Apr 5 29° 54° 19° (1996) 79° (2005) 0.11" NA
Apr 6 29° 55° 19° (1996) 79° (1988) 0.11" NA
Apr 7 30° 55° 12° (1994) 85° (1991) 0.11" NA
Apr 8 30° 55° 14° (1996) 77° (1991) 0.11" NA
Apr 9 30° 56° 12° (1997) 77° (1991) 0.11" NA
Apr 10 31° 56° 17° (1996) 76° (1987) 0.11" NA
Apr 11 31° 57° 19° (1989) 80° (2005) 0.11" NA
Apr 12 31° 57° 18° (1990) 76° (1996) 0.12" NA
Apr 13 31° 58° 16° (1997) 75° (1985) 0.12" NA
Apr 14 32° 58° 16° (1997) 82° (2006) 0.12" NA
Apr 15 32° 58° 22° (1997) 84° (2006) 0.12" NA
Apr 16 32° 59° 22° (1988) 82° (2002) 0.12" NA
Apr 17 33° 59° 23° (1988) 86° (2002) 0.12" NA
Apr 18 33° 60° 18° (1990) 85° (2002) 0.12" NA
Apr 19 33° 60° 15° (1988) 85° (1985) 0.12" NA
Apr 20 34° 61° 23° (1988) 84° (1985) 0.11" NA
Apr 21 34° 61° 22° (1988) 86° (1987) 0.11" NA
Apr 22 34° 61° 19° (1986) 83° (1985) 0.11" NA
Apr 23 35° 62° 25° (1986) 82° (2007) 0.11" NA
Apr 24 35° 62° 28° (1988) 82° (1990) 0.11" NA
Apr 25 35° 63° 28° (1997) 83° (1990) 0.11" NA
Apr 26 36° 63° 28° (2006) 88° (1986) 0.11" NA
Apr 27 36° 63° 24° (1996) 84° (1986) 0.11" NA
Apr 28 36° 64° 26° (1992) 82° (1986) 0.11" NA
Apr 29 37° 64° 30° (1988) 80° (2001) 0.11" NA
Apr 30 37° 65° 31° (1987) 85° (2007) 0.11" NA
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