Affton, Missouri
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -6° -23.3° (1977) 23.3° (1970) 2.01" NA
February -3° -25° (1996) 26.1° (1976) 2.06" NA
March 13° -16.7° (1978) 31.1° (1997) 3.7" NA
April 19° -6.7° (1975) 33.9° (2006) 3.82" NA
May 14° 25° 1.1° (1978) 35° (1996) 3.92" NA
June 19° 30° 4.4° (1976) 38.9° (1988) 3.73" NA
July 22° 33° 11.7° (1975) 40.6° (1999) 3.78" NA
August 21° 31° 10.6° (1992) 40° (2003) 3.7" NA
September 16° 27° 1.7° (1969) 37.2° (1990) 2.69" NA
October 21° -2.2° (1987) 34.4° (2006) 2.81" NA
November 12° -13.9° (1976) 28.3° (2003) 4.06" NA
December -3° -27.2° (1989) 25.6° (1970) 2.56" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 -5.6° 4.4° -17° (1996) 23° (1989) 0.06" NA
Feb 2 -5° 4.4° -18° (1996) 16° (2003) 0.06" NA
Feb 3 -5° -25° (1996) 19° (2003) 0.06" NA
Feb 4 -5° -23° (1996) 19° (1992) 0.06" NA
Feb 5 -5° -20° (1996) 17° (1973) 0.06" NA
Feb 6 -4.4° 5.6° -18° (1988) 16° (1974) 0.06" NA
Feb 7 -4.4° 5.6° -18° (1978) 13° (1999) 0.07" NA
Feb 8 -4.4° 5.6° -16° (1971) 18° (1993) 0.07" NA
Feb 9 -4.4° 6.1° -17° (1978) 20° (1990) 0.07" NA
Feb 10 -3.9° 6.1° -17° (1978) 17° (1976) 0.07" NA
Feb 11 -3.9° 6.1° -16° (1988) 21° (1999) 0.07" NA
Feb 12 -3.9° 6.7° -20° (1988) 22° (1999) 0.07" NA
Feb 13 -3.9° 6.7° -19° (1988) 21° (1990) 0.07" NA
Feb 14 -3.3° 6.7° -10.6° (2007) 19° (1990) 0.07" NA
Feb 15 -3.3° 7.2° -13.9° (2007) 21° (1972) 0.07" NA
Feb 16 -3.3° 7.2° -15.6° (2007) 25° (2005) 0.07" NA
Feb 17 -2.8° 7.2° -14.4° (2007) 23° (1976) 0.07" NA
Feb 18 -2.8° 7.8° -18° (1993) 22° (1971) 0.08" NA
Feb 19 -2.8° 7.8° -14.4° (2006) 22° (1991) 0.08" NA
Feb 20 -2.2° 7.8° -13° (1978) 21° (1971) 0.08" NA
Feb 21 -2.2° 8.3° -13° (1978) 23° (1996) 0.08" NA
Feb 22 -2.2° 8.3° -13° (1978) 22° (1991) 0.08" NA
Feb 23 -1.7° 8.3° -14° (1989) 26° (1995) 0.08" NA
Feb 24 -1.7° 8.9° -14° (1989) 24° (1996) 0.09" NA
Feb 25 -1.7° 8.9° -14° (1989) 26° (1976) 0.09" NA
Feb 26 -1.1° 8.9° -12° (2003) 24° (1996) 0.09" NA
Feb 27 -1.1° 9.4° -11° (1993) 25° (1996) 0.09" NA
Feb 28 -0.6° 9.4° -11° (1993) 26° (1976) 0.09" NA
Feb 29 -0.6° 9.4° -9° (1996) 26° (1972) 0.09" NA
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