Vandalia, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° 36° -21° (1985) 69° (1997) 2.63" 4.4"
February 24° 42° -16° (1996) 77° (2000) 2.64" 2.9"
March 33° 53° -9° (1978) 84° (1985) 3.24" 1.6"
April 43° 65° 20° (1983) 89° (1987) 3.7" 0.2"
May 53° 74° 31° (1976) 92° (2006) 5" 0"
June 63° 84° 41° (1992) 101° (1988) 4.15" 0"
July 67° 87° 49° (1975) 104° (1980) 3.6" 0"
August 64° 86° 43° (1986) 104° (1983) 3.2" 0"
September 55° 79° 30° (1995) 98° (1983) 2.85" 0"
October 43° 67° 22° (1979) 91° (2007) 3.24" 0"
November 35° 54° 5° (1977) 81° (2003) 4.02" 0.4"
December 24° 40° -17° (1989) 72° (1982) 3.09" 2.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 48° 73° 31° (1984) 87° (1979) 0.1" 0"
Oct 2 48° 72° 30° (1974) 87° (1994) 0.1" 0"
Oct 3 47° 72° 28° (1974) 89° (2002) 0.1" 0"
Oct 4 47° 72° 32° (1987) 91° (2006) 0.11" 0"
Oct 5 46° 71° 29° (1980) 91° (2006) 0.11" 0"
Oct 6 46° 71° 30° (1980) 89° (2007) 0.1" 0"
Oct 7 46° 70° 28° (1987) 90° (2007) 0.11" 0"
Oct 8 45° 70° 28° (1987) 91° (2007) 0.1" 0"
Oct 9 45° 70° 30° (1974) 91° (2007) 0.11" 0"
Oct 10 45° 69° 31° (2000) 85° (2010) 0.11" 0"
Oct 11 44° 69° 31° (2000) 86° (2010) 0.11" 0"
Oct 12 44° 69° 27° (1987) 84° (2010) 0.1" 0"
Oct 13 44° 68° 26° (1987) 84° (1975) 0.11" 0"
Oct 14 44° 68° 22° (1979) 87° (1975) 0.1" 0"
Oct 15 43° 67° 29° (2006) 84° (1992) 0.11" 0"
Oct 16 43° 67° 28° (1991) 82° (1999) 0.1" 0"
Oct 17 43° 67° 28° (1991) 82° (1980) 0.11" 0"
Oct 18 43° 66° 30° (1999) 80° (1995) 0.1" 0"
Oct 19 42° 66° 25° (1992) 85° (1995) 0.12" 0"
Oct 20 42° 66° 26° (1992) 80° (1979) 0.1" 0"
Oct 21 42° 65° 28° (1982) 86° (1979) 0.11" 0"
Oct 22 42° 65° 25° (1982) 86° (1979) 0.11" 0"
Oct 23 42° 65° 28° (1997) 80° (1975) 0.1" 0"
Oct 24 41° 64° 26° (1978) 80° (2000) 0.11" 0"
Oct 25 41° 64° 26° (1982) 81° (1973) 0.09" 0"
Oct 26 41° 64° 27° (1982) 80° (2000) 0.1" 0"
Oct 27 41° 63° 28° (1982) 80° (2000) 0.09" 0"
Oct 28 41° 63° 27° (2001) 81° (1999) 0.11" 0"
Oct 29 40° 62° 24° (1976) 79° (1999) 0.1" 0"
Oct 30 40° 62° 23° (1980) 82° (2004) 0.1" 0"
Oct 31 40° 62° 24° (1980) 79° (1987) 0.11" 0"
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