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
May 1 37° 65° 30° (1994) 77° (2007) 0.11" NA
May 2 38° 65° 27° (1994) 85° (1992) 0.11" NA
May 3 38° 66° 21° (2005) 76° (1999) 0.1" NA
May 4 39° 66° 21° (2005) 79° (1999) 0.1" NA
May 5 39° 67° 25° (2005) 82° (2000) 0.1" NA
May 6 39° 67° 25° (1992) 83° (2000) 0.1" NA
May 7 40° 67° 21° (1989) 83° (2000) 0.1" NA
May 8 40° 68° 24° (1989) 84° (2000) 0.1" NA
May 9 40° 68° 32° (1989) 84° (1993) 0.1" NA
May 10 41° 68° 29° (1997) 83° (1987) 0.1" NA
May 11 41° 69° 30° (1990) 86° (1987) 0.1" NA
May 12 41° 69° 30° (1989) 87° (1987) 0.1" NA
May 13 42° 70° 31° (1996) 87° (1991) 0.1" NA
May 14 42° 70° 34° (2000) 87° (1991) 0.11" NA
May 15 42° 70° 32° (1995) 89° (1998) 0.11" NA
May 16 43° 71° 24° (1997) 84° (1998) 0.11" NA
May 17 43° 71° 30° (1997) 86° (1992) 0.11" NA
May 18 44° 71° 31° (2002) 89° (1998) 0.11" NA
May 19 44° 72° 32° (1994) 91° (1998) 0.11" NA
May 20 44° 72° 29° (2002) 89° (1998) 0.12" NA
May 21 45° 72° 30° (1997) 86° (1992) 0.12" NA
May 22 45° 73° 29° (2002) 86° (1992) 0.12" NA
May 23 45° 73° 38° (1995) 87° (1994) 0.12" NA
May 24 46° 74° 37° (1992) 88° (1994) 0.13" NA
May 25 46° 74° 32° (1988) 87° (1989) 0.13" NA
May 26 47° 74° 35° (1988) 84° (1985) 0.13" NA
May 27 47° 75° 28° (1992) 90° (1985) 0.14" NA
May 28 47° 75° 32° (1992) 87° (1991) 0.14" NA
May 29 48° 75° 34° (1992) 92° (1991) 0.14" NA
May 30 48° 76° 34° (1996) 91° (2006) 0.15" NA
May 31 49° 76° 39° (1990) 89° (1989) 0.15" NA
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