Affton, Missouri
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° 40° -10° (1977) 74° (1970) 2.45" NA
February 28° 45° -13° (1996) 79° (1976) 2.48" NA
March 37° 55° 2° (1978) 88° (1997) 3.36" NA
April 47° 67° 20° (1975) 93° (2006) 4.1" NA
May 57° 77° 34° (1978) 95° (1996) 4.8" NA
June 67° 85° 40° (1976) 102° (1988) 4.34" NA
July 71° 89° 53° (1975) 105° (1999) 4.19" NA
August 70° 88° 51° (1992) 104° (2003) 3.41" NA
September 61° 81° 35° (1969) 99° (1990) 3.38" NA
October 50° 69° 28° (1987) 94° (2006) 3.43" NA
November 39° 56° 7° (1976) 83° (2003) 4.22" NA
December 28° 43° -17° (1989) 78° (1970) 2.96" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 71° 89° 57° (1992) 104° (1970) 0.12" NA
Aug 2 71° 89° 64° (1968) 103° (2006) 0.13" NA
Aug 3 71° 89° 60° (1976) 103° (1987) 0.12" NA
Aug 4 71° 89° 60° (1976) 104° (2010) 0.13" NA
Aug 5 71° 89° 61° (1994) 103° (2010) 0.11" NA
Aug 6 71° 89° 55° (1994) 97° (1996) 0.12" NA
Aug 7 71° 89° 55° (1990) 99° (2006) 0.11" NA
Aug 8 71° 89° 58° (1976) 97° (1968) 0.12" NA
Aug 9 71° 89° 57° (1989) 100° (1988) 0.11" NA
Aug 10 71° 89° 57° (1989) 99° (1988) 0.11" NA
Aug 11 71° 89° 60° (2004) 101° (2010) 0.11" NA
Aug 12 71° 89° 52° (2004) 102° (2010) 0.11" NA
Aug 13 70° 89° 52° (2004) 102° (2010) 0.12" NA
Aug 14 70° 89° 53° (2004) 100° (2010) 0.1" NA
Aug 15 70° 89° 51° (1992) 100° (2010) 0.11" NA
Aug 16 70° 88° 55° (1992) 101° (1988) 0.1" NA
Aug 17 70° 88° 54° (2004) 100° (1988) 0.11" NA
Aug 18 70° 88° 59° (1992) 101° (1988) 0.11" NA
Aug 19 70° 88° 59° (1977) 101° (1988) 0.11" NA
Aug 20 70° 88° 58° (1991) 98° (1995) 0.11" NA
Aug 21 69° 88° 57° (1992) 98° (2003) 0.11" NA
Aug 22 69° 88° 60° (1969) 104° (2003) 0.11" NA
Aug 23 69° 88° 58° (1997) 97° (2002) 0.1" NA
Aug 24 69° 87° 59° (1987) 96° (1971) 0.11" NA
Aug 25 69° 87° 57° (1987) 97° (1998) 0.1" NA
Aug 26 68° 87° 58° (1987) 99° (2003) 0.1" NA
Aug 27 68° 87° 57° (1968) 100° (2003) 0.1" NA
Aug 28 68° 87° 54° (1968) 98° (1990) 0.1" NA
Aug 29 68° 87° 54° (1988) 100° (1990) 0.1" NA
Aug 30 67° 86° 54° (1988) 95° (1969) 0.1" NA
Aug 31 67° 86° 55° (1987) 96° (1995) 0.11" NA
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