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
Jul 1 64° 89° 50° (1976) 98° (1978) 0.11" NA
Jul 2 64° 89° 52° (1995) 98° (1978) 0.11" NA
Jul 3 64° 89° 55° (1968) 98° (1978) 0.11" NA
Jul 4 64° 90° 49° (1968) 98° (1978) 0.11" NA
Jul 5 64° 90° 46° (1972) 97° (1966) 0.11" NA
Jul 6 65° 90° 46° (1972) 100° (1966) 0.11" NA
Jul 7 65° 90° 47° (1972) 99° (1966) 0.11" NA
Jul 8 65° 90° 50° (2006) 100° (1978) 0.11" NA
Jul 9 65° 90° 57° (1970) 101° (1966) 0.11" NA
Jul 10 65° 90° 53° (1963) 103° (1966) 0.11" NA
Jul 11 65° 91° 52° (1963) 103° (1966) 0.11" NA
Jul 12 65° 91° 56° (1973) 104° (1966) 0.11" NA
Jul 13 65° 91° 49° (1975) 104° (1966) 0.11" NA
Jul 14 65° 91° 46° (1975) 105° (1966) 0.11" NA
Jul 15 65° 91° 52° (1975) 103° (1966) 0.11" NA
Jul 16 66° 91° 51° (1967) 97° (1969) 0.11" NA
Jul 17 66° 91° 50° (1976) 99° (1971) 0.11" NA
Jul 18 66° 91° 56° (1967) 101° (1966) 0.11" NA
Jul 19 66° 91° 56° (1967) 100° (1964) 0.11" NA
Jul 20 66° 91° 55° (1971) 101° (1998) 0.11" NA
Jul 21 66° 91° 48° (1970) 101° (1998) 0.11" NA
Jul 22 66° 91° 53° (2007) 101° (2001) 0.11" NA
Jul 23 66° 91° 52° (1966) 99° (1998) 0.1" NA
Jul 24 66° 91° 54° (2000) 100° (1965) 0.1" NA
Jul 25 66° 92° 53° (2000) 99° (2005) 0.1" NA
Jul 26 66° 92° 54° (2000) 101° (1997) 0.1" NA
Jul 27 65° 92° 55° (2004) 102° (1997) 0.1" NA
Jul 28 65° 92° 51° (1978) 101° (1966) 0.1" NA
Jul 29 65° 92° 53° (2004) 98° (1976) 0.1" NA
Jul 30 65° 92° 52° (1974) 101° (1999) 0.1" NA
Jul 31 65° 92° 46° (1971) 100° (1999) 0.1" NA
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