Vandalia, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 18° 35° -21° (1985) 69° (1997) 2.49" NA
February 23° 41° -16° (1996) 77° (2000) 2.41" NA
March 32° 52° -9° (1978) 84° (1985) 3.72" NA
April 43° 64° 20° (1983) 89° (1987) 3.57" NA
May 53° 74° 31° (1976) 92° (2006) 4.11" NA
June 62° 83° 41° (1992) 101° (1988) 3.93" NA
July 67° 88° 49° (1975) 104° (1980) 3.61" NA
August 64° 86° 43° (1986) 104° (1983) 2.8" NA
September 55° 79° 30° (1995) 98° (1983) 2.97" NA
October 43° 67° 22° (1979) 91° (2007) 2.84" NA
November 34° 53° 5° (1977) 81° (2003) 3.7" NA
December 24° 40° -17° (1989) 72° (1982) 2.75" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 58° 79° 42° (2003) 91° (1988) 0.14" NA
Jun 2 59° 80° 45° (2003) 92° (2002) 0.14" NA
Jun 3 59° 80° 48° (1994) 92° (1991) 0.14" NA
Jun 4 59° 80° 50° (1988) 93° (2002) 0.13" NA
Jun 5 60° 81° 48° (1988) 91° (2002) 0.13" NA
Jun 6 60° 81° 45° (1998) 97° (1977) 0.13" NA
Jun 7 60° 81° 46° (1983) 92° (1999) 0.13" NA
Jun 8 60° 81° 47° (2000) 92° (1988) 0.13" NA
Jun 9 61° 82° 48° (1978) 92° (1999) 0.13" NA
Jun 10 61° 82° 49° (1988) 91° (1984) 0.13" NA
Jun 11 61° 82° 50° (1988) 94° (1999) 0.13" NA
Jun 12 62° 82° 50° (1985) 92° (1984) 0.13" NA
Jun 13 62° 83° 45° (1985) 94° (1987) 0.13" NA
Jun 14 62° 83° 47° (1985) 99° (1987) 0.13" NA
Jun 15 62° 83° 53° (1985) 94° (1987) 0.13" NA
Jun 16 63° 83° 51° (1974) 95° (1987) 0.13" NA
Jun 17 63° 84° 50° (1974) 94° (1984) 0.13" NA
Jun 18 63° 84° 47° (1999) 95° (1992) 0.13" NA
Jun 19 63° 84° 53° (1985) 94° (1994) 0.13" NA
Jun 20 63° 84° 51° (2003) 95° (1994) 0.13" NA
Jun 21 64° 85° 43° (1992) 98° (1988) 0.13" NA
Jun 22 64° 85° 41° (1992) 98° (1988) 0.13" NA
Jun 23 64° 85° 47° (1992) 100° (1988) 0.13" NA
Jun 24 64° 85° 51° (1974) 97° (1988) 0.13" NA
Jun 25 64° 85° 48° (1974) 99° (1988) 0.13" NA
Jun 26 65° 85° 50° (1974) 101° (1988) 0.13" NA
Jun 27 65° 86° 52° (1979) 98° (1978) 0.13" NA
Jun 28 65° 86° 52° (1992) 94° (1998) 0.13" NA
Jun 29 65° 86° 53° (1987) 95° (1998) 0.13" NA
Jun 30 65° 86° 57° (1976) 96° (2005) 0.13" NA
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