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
Feb 1 19° 36° -12° (1979) 68° (1989) 0.08" NA
Feb 2 19° 37° -8° (1979) 57° (1998) 0.08" NA
Feb 3 20° 37° -15° (1996) 54° (1991) 0.08" NA
Feb 4 20° 37° -16° (1996) 64° (1992) 0.08" NA
Feb 5 20° 37° -10° (1985) 61° (1991) 0.08" NA
Feb 6 20° 38° -7° (1984) 56° (2005) 0.08" NA
Feb 7 20° 38° -10° (1977) 57° (1987) 0.08" NA
Feb 8 21° 38° -4° (1979) 57° (1987) 0.08" NA
Feb 9 21° 39° -12° (1979) 64° (1990) 0.08" NA
Feb 10 21° 39° -11° (1979) 65° (2001) 0.08" NA
Feb 11 22° 39° -5° (1981) 71° (1976) 0.08" NA
Feb 12 22° 40° -3° (1981) 69° (1999) 0.08" NA
Feb 13 22° 40° 2° (1995) 65° (1990) 0.08" NA
Feb 14 22° 40° 10° (2007) 62° (1990) 0.08" NA
Feb 15 23° 40° 5° (2007) 63° (1984) 0.08" NA
Feb 16 23° 41° 2° (2007) 71° (1976) 0.08" NA
Feb 17 23° 41° 3° (2007) 70° (1976) 0.09" NA
Feb 18 23° 42° -4° (1993) 62° (1994) 0.09" NA
Feb 19 24° 42° -4° (1993) 66° (1994) 0.09" NA
Feb 20 24° 42° 6° (1978) 66° (1994) 0.09" NA
Feb 21 24° 43° 14° (1978) 70° (1983) 0.09" NA
Feb 22 25° 43° 10° (1978) 68° (1983) 0.09" NA
Feb 23 25° 43° 8° (1978) 69° (1983) 0.09" NA
Feb 24 25° 44° 8° (1993) 66° (1996) 0.1" NA
Feb 25 26° 44° 8° (1974) 77° (2000) 0.1" NA
Feb 26 26° 44° 8° (1974) 73° (2000) 0.1" NA
Feb 27 26° 45° 3° (1993) 74° (1996) 0.1" NA
Feb 28 27° 45° 3° (1993) 72° (1976) 0.1" NA
Feb 29 27° 45° 16° (1996) 68° (1992) 0.1" NA
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