Alton, Missouri
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° 45° -18° (1977) 76° (2002) 2.73" NA
February 24° 51° -10° (1982) 82° (1996) 3.1" NA
March 33° 61° 3° (1980) 90° (1967) 4.2" NA
April 42° 70° 15° (2007) 92° (1980) 4.11" NA
May 51° 78° 28° (1976) 94° (2000) 4.72" NA
June 60° 86° 40° (1969) 100° (1978) 3.41" NA
July 65° 91° 46° (1975) 105° (1966) 3.32" NA
August 63° 90° 45° (1973) 105° (2000) 3.06" NA
September 54° 83° 31° (1967) 103° (2000) 3.57" NA
October 42° 73° 16° (1981) 94° (1979) 3.4" NA
November 33° 59° 1° (1976) 85° (1980) 5.07" NA
December 24° 48° -6° (1976) 76° (2001) 4.16" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 21° 45° -1° (1977) 68° (2000) 0.1" NA
Jan 2 20° 44° -1° (2001) 67° (2000) 0.1" NA
Jan 3 20° 44° -1° (2001) 71° (1997) 0.1" NA
Jan 4 20° 44° 1° (2001) 72° (2004) 0.1" NA
Jan 5 20° 44° 0° (1999) 74° (1997) 0.09" NA
Jan 6 20° 44° 1° (1995) 67° (1965) 0.09" NA
Jan 7 20° 44° -6° (1970) 74° (1965) 0.09" NA
Jan 8 20° 44° -6° (1970) 67° (1965) 0.09" NA
Jan 9 20° 44° 0° (1976) 72° (2006) 0.09" NA
Jan 10 20° 44° -9° (1982) 71° (2002) 0.09" NA
Jan 11 20° 44° -18° (1977) 65° (2000) 0.09" NA
Jan 12 20° 44° -6° (1977) 71° (1995) 0.09" NA
Jan 13 20° 44° -1° (1963) 71° (1995) 0.09" NA
Jan 14 20° 44° -5° (1982) 69° (1996) 0.08" NA
Jan 15 20° 44° -5° (1982) 70° (1996) 0.08" NA
Jan 16 19° 44° -10° (1982) 70° (1974) 0.08" NA
Jan 17 19° 44° -15° (1977) 67° (2000) 0.08" NA
Jan 18 20° 44° -6° (1997) 67° (1974) 0.08" NA
Jan 19 20° 44° -8° (1977) 66° (1974) 0.08" NA
Jan 20 20° 44° 4° (1963) 68° (1964) 0.08" NA
Jan 21 20° 45° 2° (1970) 69° (1964) 0.08" NA
Jan 22 20° 45° 5° (1977) 72° (1967) 0.08" NA
Jan 23 20° 45° -6° (1963) 75° (1967) 0.08" NA
Jan 24 20° 45° -9° (1963) 76° (2002) 0.09" NA
Jan 25 20° 45° -3° (1963) 69° (1981) 0.09" NA
Jan 26 20° 46° 1° (1978) 68° (1964) 0.09" NA
Jan 27 20° 46° -1° (1963) 62° (1999) 0.09" NA
Jan 28 20° 46° -5° (1963) 74° (1970) 0.09" NA
Jan 29 20° 46° -3° (1966) 74° (2002) 0.09" NA
Jan 30 20° 46° -3° (1966) 73° (2002) 0.09" NA
Jan 31 21° 47° -2° (1977) 69° (1967) 0.09" NA
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