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
Sep 1 51° 78° 39° (1994) 92° (2000) 0.15" NA
Sep 2 51° 78° 43° (1987) 93° (2000) 0.15" NA
Sep 3 50° 78° 41° (1987) 94° (2000) 0.14" NA
Sep 4 50° 77° 38° (1997) 87° (1985) 0.14" NA
Sep 5 50° 77° 38° (1988) 91° (1990) 0.14" NA
Sep 6 49° 77° 32° (1988) 91° (1990) 0.14" NA
Sep 7 49° 77° 32° (1986) 93° (1990) 0.14" NA
Sep 8 49° 76° 32° (1986) 94° (1985) 0.13" NA
Sep 9 48° 76° 34° (1995) 87° (1985) 0.13" NA
Sep 10 48° 76° 35° (1995) 90° (1991) 0.13" NA
Sep 11 48° 75° 34° (1995) 87° (1988) 0.13" NA
Sep 12 47° 75° 34° (1995) 88° (1988) 0.13" NA
Sep 13 47° 75° 37° (1985) 90° (1998) 0.13" NA
Sep 14 47° 74° 37° (1985) 88° (1994) 0.12" NA
Sep 15 46° 74° 33° (1985) 89° (1994) 0.12" NA
Sep 16 46° 74° 33° (2007) 88° (1994) 0.12" NA
Sep 17 45° 74° 34° (1999) 83° (1997) 0.12" NA
Sep 18 45° 73° 34° (1999) 93° (1988) 0.12" NA
Sep 19 45° 73° 35° (1999) 87° (2000) 0.11" NA
Sep 20 44° 73° 29° (1991) 86° (1985) 0.11" NA
Sep 21 44° 72° 29° (1991) 84° (1998) 0.11" NA
Sep 22 44° 72° 25° (1995) 87° (2007) 0.11" NA
Sep 23 43° 72° 19° (1995) 85° (1988) 0.11" NA
Sep 24 43° 71° 19° (1995) 87° (2007) 0.11" NA
Sep 25 42° 71° 24° (1995) 76° (2004) 0.1" NA
Sep 26 42° 71° 33° (1995) 86° (1986) 0.1" NA
Sep 27 42° 70° 28° (1991) 89° (1998) 0.1" NA
Sep 28 41° 70° 29° (1991) 88° (1998) 0.1" NA
Sep 29 41° 69° 27° (1992) 80° (1995) 0.1" NA
Sep 30 40° 69° 27° (1992) 80° (1988) 0.09" NA
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