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
Apr 1 38° 59° 25° (1984) 82° (1978) 0.12" 0"
Apr 2 39° 60° 24° (1987) 83° (2010) 0.12" 0"
Apr 3 39° 60° 25° (1987) 81° (2007) 0.12" 0.1"
Apr 4 39° 61° 21° (1975) 79° (1981) 0.11" 0"
Apr 5 40° 61° 25° (2002) 78° (2005) 0.11" 0"
Apr 6 40° 61° 27° (1975) 85° (1988) 0.12" 0"
Apr 7 40° 62° 23° (2007) 81° (1991) 0.11" 0"
Apr 8 41° 62° 23° (2007) 81° (2001) 0.12" 0"
Apr 9 41° 63° 23° (1997) 83° (2001) 0.12" 0.1"
Apr 10 41° 63° 24° (1997) 84° (2001) 0.12" 0"
Apr 11 42° 63° 28° (1989) 85° (1977) 0.12" 0"
Apr 12 42° 64° 27° (1976) 83° (1977) 0.11" 0"
Apr 13 42° 64° 29° (2007) 81° (2006) 0.12" 0"
Apr 14 43° 65° 27° (1997) 84° (2006) 0.11" 0"
Apr 15 43° 65° 29° (1997) 87° (2006) 0.11" 0"
Apr 16 43° 65° 27° (1983) 87° (1977) 0.12" 0"
Apr 17 44° 66° 29° (1983) 86° (2002) 0.12" 0"
Apr 18 44° 66° 25° (1984) 86° (1977) 0.13" 0"
Apr 19 44° 66° 20° (1983) 87° (2002) 0.12" 0"
Apr 20 45° 67° 24° (1983) 85° (1985) 0.12" 0"
Apr 21 45° 67° 30° (1983) 85° (1987) 0.13" 0"
Apr 22 45° 67° 30° (1978) 85° (1985) 0.12" 0"
Apr 23 46° 68° 35° (1993) 82° (1985) 0.14" 0"
Apr 24 46° 68° 35° (1984) 83° (1990) 0.14" 0"
Apr 25 46° 68° 31° (1983) 86° (1990) 0.14" 0"
Apr 26 47° 69° 30° (1976) 87° (1990) 0.13" 0"
Apr 27 47° 69° 32° (1976) 88° (1981) 0.13" 0"
Apr 28 47° 69° 31° (1992) 88° (1981) 0.14" 0"
Apr 29 48° 70° 33° (1976) 89° (1987) 0.14" 0"
Apr 30 48° 70° 35° (2008) 84° (2007) 0.14" 0"
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