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
Aug 1 66° 87° 54° (1992) 99° (1980) 0.11" 0"
Aug 2 66° 87° 55° (1973) 100° (1987) 0.1" 0"
Aug 3 66° 86° 54° (1976) 99° (1991) 0.11" 0"
Aug 4 66° 86° 52° (1976) 98° (1988) 0.09" 0"
Aug 5 66° 86° 53° (1974) 100° (1980) 0.1" 0"
Aug 6 66° 86° 50° (1994) 98° (1983) 0.1" 0"
Aug 7 66° 86° 51° (1990) 96° (1980) 0.09" 0"
Aug 8 66° 86° 54° (1976) 99° (1980) 0.1" 0"
Aug 9 65° 86° 53° (1976) 103° (1980) 0.09" 0"
Aug 10 65° 86° 55° (1976) 103° (1980) 0.1" 0"
Aug 11 65° 86° 55° (2008) 103° (1980) 0.11" 0"
Aug 12 65° 86° 50° (1982) 97° (1988) 0.11" 0"
Aug 13 65° 86° 50° (2004) 101° (2007) 0.11" 0"
Aug 14 65° 86° 51° (2004) 96° (1980) 0.11" 0"
Aug 15 65° 86° 50° (1992) 97° (1988) 0.1" 0"
Aug 16 65° 86° 50° (2004) 103° (2007) 0.1" 0"
Aug 17 65° 86° 53° (2004) 101° (1988) 0.11" 0"
Aug 18 65° 86° 54° (1976) 101° (1988) 0.11" 0"
Aug 19 64° 86° 53° (1977) 101° (1988) 0.1" 0"
Aug 20 64° 86° 53° (1992) 101° (1983) 0.11" 0"
Aug 21 64° 86° 54° (1992) 104° (1983) 0.11" 0"
Aug 22 64° 86° 52° (1978) 102° (1983) 0.11" 0"
Aug 23 64° 86° 53° (1997) 97° (2007) 0.1" 0"
Aug 24 63° 86° 50° (1984) 98° (2007) 0.1" 0"
Aug 25 63° 86° 51° (1984) 97° (1978) 0.1" 0"
Aug 26 63° 86° 50° (1984) 98° (1980) 0.1" 0"
Aug 27 63° 85° 55° (1982) 100° (1980) 0.1" 0"
Aug 28 63° 85° 46° (1986) 100° (1983) 0.1" 0"
Aug 29 62° 85° 43° (1986) 98° (2007) 0.11" 0"
Aug 30 62° 85° 44° (1986) 98° (2007) 0.1" 0"
Aug 31 62° 85° 47° (1987) 100° (1983) 0.11" 0"
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