Saint Louis, Missouri
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -5° -23.3° (1977) 23.3° (1970) 2.45" NA
February -2° -25° (1996) 26.1° (1976) 2.48" NA
March 13° -16.7° (1978) 31.1° (1997) 3.36" NA
April 20° -6.7° (1975) 33.9° (2006) 4.1" NA
May 14° 25° 1.1° (1978) 35° (1996) 4.8" NA
June 19° 30° 4.4° (1976) 38.9° (1988) 4.34" NA
July 22° 32° 11.7° (1975) 40.6° (1999) 4.19" NA
August 21° 31° 10.6° (1992) 40° (2003) 3.41" NA
September 16° 27° 1.7° (1969) 37.2° (1990) 3.38" NA
October 10° 21° -2.2° (1987) 34.4° (2006) 3.43" NA
November 13° -13.9° (1976) 28.3° (2003) 4.22" NA
December -2° -27.2° (1989) 25.6° (1970) 2.96" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 19° 30° 11° (2009) 34° (1969) 0.11" NA
Sep 2 19° 30° 12° (1974) 35° (1975) 0.11" NA
Sep 3 19° 30° 10° (1974) 36° (2002) 0.11" NA
Sep 4 19° 29° 10° (1974) 36° (1999) 0.1" NA
Sep 5 19° 29° 11° (1997) 36° (1990) 0.12" NA
Sep 6 18° 29° 9° (1988) 37° (1990) 0.12" NA
Sep 7 18° 29° 11° (1988) 37° (1990) 0.11" NA
Sep 8 18° 29° 12° (1987) 37° (1970) 0.12" NA
Sep 9 18° 29° 12° (1998) 35° (1971) 0.12" NA
Sep 10 18° 28° 12° (1969) 36° (1971) 0.11" NA
Sep 11 17° 28° 11° (1992) 35° (2002) 0.12" NA
Sep 12 17° 28° 12° (1968) 33° (1972) 0.12" NA
Sep 13 17° 28° 10° (1975) 34° (1971) 0.12" NA
Sep 14 17° 28° 8° (1996) 37° (1971) 0.13" NA
Sep 15 16° 27° 8.3° (2007) 34° (1994) 0.12" NA
Sep 16 16° 27° 11° (1993) 32° (1970) 0.13" NA
Sep 17 16° 27° 9° (1999) 34° (1997) 0.11" NA
Sep 18 16° 27° 7° (1973) 33° (1988) 0.12" NA
Sep 19 15° 26° 9° (1973) 34° (1972) 0.11" NA
Sep 20 15° 26° 6.7° (2006) 34° (1972) 0.11" NA
Sep 21 15° 26° 6° (1974) 33° (1972) 0.11" NA
Sep 22 15° 26° 4° (1995) 33° (2010) 0.11" NA
Sep 23 14° 26° 3° (1995) 35° (2005) 0.11" NA
Sep 24 14° 25° 3° (1995) 34.4° (2007) 0.11" NA
Sep 25 14° 25° 2° (1969) 32.2° (2007) 0.11" NA
Sep 26 14° 25° 8° (1975) 32° (1999) 0.11" NA
Sep 27 14° 25° 7° (1989) 33° (1998) 0.11" NA
Sep 28 13° 24° 6° (1989) 33° (1971) 0.1" NA
Sep 29 13° 24° 6° (2003) 34° (1971) 0.1" NA
Sep 30 13° 24° 5° (1992) 33° (1971) 0.09" NA
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