Alton, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -30° (1972) 68° (2002) 0.75" 6.6"
February 14° 35° -27° (1994) 68° (1981) 0.75" 5.4"
March 25° 47° -19° (1960) 87° (1968) 1.97" 6.8"
April 36° 63° -1° (1975) 95° (2007) 3.14" 2.9"
May 48° 75° 17° (1967) 104° (1967) 3.43" 0.3"
June 58° 83° 33° (1989) 105° (1988) 4.45" 0"
July 62° 86° 38° (1972) 103° (1988) 3.77" 0"
August 60° 83° 37° (1986) 101° (1988) 3.48" 0"
September 51° 77° 21° (1984) 102° (1976) 3.27" 0"
October 38° 64° 9° (1972) 92° (2006) 2.37" 1"
November 25° 45° -20° (1959) 79° (1999) 1.54" 4.6"
December 12° 31° -29° (1989) 66° (1998) 0.94" 7.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 17° 36° -5° (1983) 66° (1998) 0.04" 0.2"
Dec 2 17° 35° -8° (1985) 62° (1998) 0.04" 0.3"
Dec 3 16° 35° -13° (1985) 64° (1998) 0.03" 0.2"
Dec 4 16° 34° -12° (1978) 56° (1998) 0.04" 0.3"
Dec 5 16° 34° -9° (2005) 58° (2001) 0.04" 0.2"
Dec 6 15° 33° -16° (2005) 57° (1963) 0.03" 0.3"
Dec 7 15° 33° -15° (1972) 59° (1984) 0.04" 0.2"
Dec 8 14° 32° -18° (1976) 62° (1970) 0.03" 0.3"
Dec 9 14° 32° -17° (1958) 58° (1957) 0.03" 0.3"
Dec 10 14° 32° -12° (1978) 55° (1979) 0.04" 0.2"
Dec 11 13° 31° -13° (1976) 55° (1965) 0.03" 0.3"
Dec 12 13° 31° -17° (1989) 54° (1998) 0.03" 0.3"
Dec 13 13° 31° -17° (1958) 53° (1957) 0.03" 0.2"
Dec 14 12° 30° -17° (1985) 57° (1998) 0.03" 0.3"
Dec 15 12° 30° -18° (1989) 54° (2002) 0.03" 0.3"
Dec 16 12° 30° -17° (1963) 60° (1962) 0.02" 0.2"
Dec 17 12° 30° -16° (1964) 55° (1962) 0.03" 0.3"
Dec 18 11° 29° -24° (1985) 55° (1962) 0.03" 0.2"
Dec 19 11° 29° -23° (1983) 54° (1979) 0.03" 0.2"
Dec 20 11° 29° -22° (1983) 50° (1979) 0.03" 0.3"
Dec 21 11° 29° -26° (1989) 50° (1957) 0.02" 0.2"
Dec 22 11° 29° -29° (1989) 52° (1982) 0.03" 0.2"
Dec 23 10° 28° -26° (1989) 43° (1965) 0.03" 0.3"
Dec 24 10° 28° -23° (1983) 52° (1953) 0.03" 0.2"
Dec 25 10° 28° -18° (1983) 48° (1959) 0.03" 0.2"
Dec 26 10° 28° -18° (1996) 50° (1959) 0.02" 0.2"
Dec 27 10° 28° -14° (1996) 52° (1958) 0.03" 0.2"
Dec 28 10° 28° -12° (1993) 58° (2002) 0.03" 0.3"
Dec 29 10° 28° -13° (1990) 55° (1999) 0.02" 0.2"
Dec 30 10° 28° -16° (1973) 60° (2004) 0.03" 0.2"
Dec 31 28° -21° (1973) 60° (2004) 0.02" 0.2"
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