Alton, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -30° (1972) 68° (2002) 0.75" 7"
February 14° 35° -27° (1994) 68° (1981) 0.7" 5.9"
March 25° 47° -19° (1960) 87° (1968) 2.04" 7.9"
April 36° 63° -1° (1975) 95° (2007) 2.83" 2.1"
May 48° 75° 17° (1967) 104° (1967) 3.49" 0"
June 58° 84° 33° (1989) 105° (1988) 4.59" 0"
July 61° 87° 38° (1972) 103° (1988) 3.79" 0"
August 59° 84° 37° (1986) 101° (1988) 3.42" 0"
September 49° 78° 21° (1984) 102° (1976) 2.59" 0"
October 37° 65° 9° (1972) 92° (2006) 2.16" 1.2"
November 24° 44° -20° (1959) 79° (1999) 1.62" 4.5"
December 11° 31° -29° (1989) 66° (1998) 0.81" 7.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 31° 56° 11° (1975) 83° (1963) 0.08" NA
Apr 2 31° 56° 10° (1975) 83° (1981) 0.09" NA
Apr 3 32° 57° -1° (1975) 82° (1981) 0.09" NA
Apr 4 32° 57° 13° (2002) 79° (2005) 0.09" NA
Apr 5 32° 58° 14° (1968) 88° (1991) 0.09" NA
Apr 6 33° 58° 11° (1982) 92° (1991) 0.09" NA
Apr 7 33° 59° 12° (1990) 87° (1988) 0.09" NA
Apr 8 33° 59° 9° (1997) 87° (1988) 0.09" NA
Apr 9 34° 60° 12° (1997) 88° (1977) 0.09" NA
Apr 10 34° 60° 19° (1973) 85° (1977) 0.09" NA
Apr 11 34° 61° 18° (1990) 85° (1968) 0.09" NA
Apr 12 35° 61° 11° (1957) 85° (1968) 0.09" NA
Apr 13 35° 62° 19° (1957) 90° (2006) 0.09" NA
Apr 14 36° 62° 22° (1971) 92° (1954) 0.09" NA
Apr 15 36° 63° 17° (1962) 90° (2002) 0.09" NA
Apr 16 36° 63° 22° (1961) 93° (2002) 0.09" NA
Apr 17 37° 64° 18° (1990) 89° (1985) 0.1" NA
Apr 18 37° 64° 22° (1988) 92° (1985) 0.1" NA
Apr 19 38° 65° 16° (1988) 90° (1987) 0.1" NA
Apr 20 38° 65° 24° (1966) 90° (1980) 0.1" NA
Apr 21 38° 66° 19° (1966) 93° (1980) 0.1" NA
Apr 22 39° 66° 24° (1982) 93° (1960) 0.1" NA
Apr 23 39° 67° 21° (1996) 89° (1990) 0.1" NA
Apr 24 40° 67° 18° (1967) 88° (1994) 0.1" NA
Apr 25 40° 67° 25° (1968) 92° (1962) 0.1" NA
Apr 26 40° 68° 27° (1960) 90° (1987) 0.1" NA
Apr 27 41° 68° 24° (1992) 89° (1981) 0.1" NA
Apr 28 41° 69° 25° (1956) 89° (2004) 0.1" NA
Apr 29 42° 69° 20° (1958) 95° (2007) 0.1" NA
Apr 30 42° 70° 25° (1960) 94° (2007) 0.1" NA
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