Alton, Missouri
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 22° 45° -18° (1977) 76° (2002) 2.72" NA
February 25° 50° -10° (1982) 82° (1996) 3.2" NA
March 34° 59° 3° (1980) 90° (1967) 3.96" NA
April 43° 70° 15° (2007) 92° (1980) 4.34" NA
May 53° 77° 28° (1976) 94° (2000) 4.79" NA
June 61° 85° 40° (1969) 100° (1978) 3.02" NA
July 66° 90° 46° (1975) 105° (1966) 3.79" NA
August 64° 89° 45° (1973) 105° (2000) 2.68" NA
September 55° 82° 31° (1967) 103° (2000) 3.98" NA
October 44° 71° 16° (1981) 94° (1979) 3.95" NA
November 34° 59° 1° (1976) 85° (1980) 4.82" NA
December 24° 47° -6° (1976) 76° (2001) 3.97" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 29° 54° 9° (1980) 78° (1972) 0.11" NA
Mar 2 29° 55° 3° (1980) 77° (1976) 0.11" NA
Mar 3 29° 55° 10° (1980) 79° (1974) 0.11" NA
Mar 4 30° 55° 3° (1978) 79° (1976) 0.1" NA
Mar 5 30° 56° 7° (2002) 73° (1974) 0.12" NA
Mar 6 30° 56° 14° (2008) 79° (1974) 0.13" NA
Mar 7 31° 56° 4° (1967) 83° (2009) 0.13" NA
Mar 8 31° 57° 8° (1996) 80° (2000) 0.13" NA
Mar 9 31° 57° 4° (1996) 80° (1974) 0.12" NA
Mar 10 32° 57° 11° (1996) 78° (1967) 0.13" NA
Mar 11 32° 58° 14° (1998) 88° (1967) 0.13" NA
Mar 12 32° 58° 6° (1998) 90° (1967) 0.13" NA
Mar 13 33° 58° 7° (1998) 90° (1967) 0.13" NA
Mar 14 33° 59° 20° (2005) 82° (1967) 0.13" NA
Mar 15 33° 59° 14° (1975) 80° (1977) 0.13" NA
Mar 16 34° 59° 22° (1967) 82° (1982) 0.14" NA
Mar 17 34° 60° 21° (1976) 81° (1982) 0.13" NA
Mar 18 34° 60° 19° (1967) 78° (1982) 0.13" NA
Mar 19 35° 60° 12° (1965) 80° (1969) 0.13" NA
Mar 20 35° 61° 11° (1965) 83° (1982) 0.13" NA
Mar 21 35° 61° 17° (1965) 81° (1966) 0.13" NA
Mar 22 35° 62° 15° (1974) 86° (1997) 0.14" NA
Mar 23 36° 62° 20° (1974) 80° (1995) 0.13" NA
Mar 24 36° 62° 12° (1974) 84° (1967) 0.13" NA
Mar 25 36° 63° 17° (1966) 81° (2000) 0.13" NA
Mar 26 37° 63° 18° (1964) 81° (2007) 0.14" NA
Mar 27 37° 63° 16° (2001) 83° (2007) 0.13" NA
Mar 28 37° 64° 17° (2001) 81° (1998) 0.13" NA
Mar 29 38° 64° 22° (1982) 84° (1968) 0.13" NA
Mar 30 38° 64° 16° (1964) 84° (1963) 0.13" NA
Mar 31 38° 65° 25° (1975) 83° (1978) 0.14" NA
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