Dover, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 30° -20° (1994) 68° (1989) 1.77" 7.8"
February 20° 35° -22° (1996) 69° (2000) 1.92" 5.8"
March 30° 48° -6° (2002) 82° (1991) 2.61" 3.3"
April 40° 62° 17° (1997) 93° (2002) 3.67" 0.4"
May 51° 73° 29° (1989) 95° (2006) 4.73" 0"
June 61° 82° 40° (1993) 102° (1988) 4.49" 0"
July 65° 85° 48° (2001) 102° (2005) 4.02" 0"
August 63° 83° 48° (1994) 102° (1988) 4.48" 0"
September 54° 76° 30° (1995) 96° (2000) 3.53" 0"
October 42° 63° 19° (1988) 89° (2007) 2.97" 0.1"
November 32° 48° 7° (1991) 79° (2000) 3.05" 0.9"
December 20° 34° -18° (1989) 68° (2001) 2.4" 7.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 60° 80° 50° (1994) 95° (2000) 0.15" 0"
Sep 2 60° 80° 50° (2001) 93° (1999) 0.14" 0"
Sep 3 60° 80° 48° (1997) 89° (1998) 0.14" 0"
Sep 4 59° 80° 45° (1997) 93° (2007) 0.13" 0"
Sep 5 59° 79° 45° (1988) 94° (1990) 0.14" 0"
Sep 6 59° 79° 44° (1988) 95° (1990) 0.13" 0"
Sep 7 58° 79° 48° (1988) 90° (2001) 0.13" 0"
Sep 8 58° 79° 51° (1995) 92° (2002) 0.13" 0"
Sep 9 57° 78° 47° (1995) 92° (1991) 0.13" 0"
Sep 10 57° 78° 48° (1993) 89° (2002) 0.13" 0"
Sep 11 57° 78° 44° (1993) 96° (2000) 0.12" 0"
Sep 12 56° 77° 43° (2007) 93° (1991) 0.12" 0"
Sep 13 56° 77° 45° (1996) 94° (1991) 0.12" 0"
Sep 14 55° 77° 42° (1996) 90° (1991) 0.12" 0"
Sep 15 55° 76° 37° (2007) 90° (1994) 0.11" 0"
Sep 16 54° 76° 39° (2000) 85° (1992) 0.12" 0"
Sep 17 54° 75° 45° (1990) 91° (1988) 0.11" 0"
Sep 18 53° 75° 42° (1991) 90° (2000) 0.11" 0"
Sep 19 53° 75° 39° (1991) 88° (2000) 0.11" 0"
Sep 20 53° 74° 33° (1991) 85° (2007) 0.12" 0"
Sep 21 52° 74° 36° (1991) 89° (2007) 0.11" 0"
Sep 22 52° 73° 34° (1995) 90° (1988) 0.12" 0"
Sep 23 51° 73° 30° (1995) 88° (2007) 0.11" 0"
Sep 24 51° 72° 34° (1989) 90° (2007) 0.11" 0"
Sep 25 50° 72° 36° (2001) 85° (1999) 0.1" 0"
Sep 26 50° 72° 40° (1989) 90° (1998) 0.11" 0"
Sep 27 49° 71° 37° (1989) 85° (1998) 0.1" 0"
Sep 28 49° 71° 36° (2003) 81° (1995) 0.09" 0"
Sep 29 48° 70° 36° (1992) 87° (2002) 0.09" 0"
Sep 30 48° 70° 35° (1993) 86° (1994) 0.08" 0"
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