Dorchester, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 22° -37° (1963) 57° (1996) 0.98" NA
February 10° 29° -35° (1996) 58° (2000) 0.82" NA
March 22° 41° -32° (1962) 82° (1986) 1.95" NA
April 34° 56° 2° (1982) 93° (1980) 3.67" NA
May 46° 68° 19° (1966) 90° (2007) 3.83" NA
June 56° 78° 35° (1964) 97° (1988) 4.57" NA
July 60° 82° 42° (1965) 101° (1995) 4.71" NA
August 58° 79° 35° (1964) 102° (1988) 4.85" NA
September 48° 71° 24° (1974) 92° (1960) 3.52" NA
October 37° 58° 13° (1988) 91° (1997) 2.44" NA
November 23° 41° -16° (1977) 75° (1978) 2.38" NA
December 10° 27° -28° (1983) 62° (1998) 1.27" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 53° 75° 37° (1974) 90° (2000) 0.14" NA
Sep 2 53° 75° 40° (1965) 92° (1960) 0.14" NA
Sep 3 53° 75° 33° (1974) 88° (1971) 0.14" NA
Sep 4 52° 75° 35° (1974) 91° (1960) 0.14" NA
Sep 5 52° 74° 35° (1962) 88° (1983) 0.14" NA
Sep 6 52° 74° 36° (1962) 87° (1959) 0.13" NA
Sep 7 51° 74° 37° (1986) 90° (1971) 0.13" NA
Sep 8 51° 73° 40° (1995) 91° (1980) 0.13" NA
Sep 9 50° 73° 38° (1975) 90° (2002) 0.13" NA
Sep 10 50° 73° 37° (1967) 91° (2002) 0.13" NA
Sep 11 50° 72° 35° (1962) 84° (1976) 0.13" NA
Sep 12 49° 72° 32° (1975) 86° (1998) 0.12" NA
Sep 13 49° 72° 28° (1963) 88° (1998) 0.12" NA
Sep 14 49° 71° 33° (1974) 89° (1998) 0.12" NA
Sep 15 48° 71° 32° (2007) 78° (1968) 0.12" NA
Sep 16 48° 71° 33° (2007) 86° (1972) 0.12" NA
Sep 17 47° 70° 37° (1959) 86° (1972) 0.11" NA
Sep 18 47° 70° 33° (1959) 89° (1988) 0.11" NA
Sep 19 47° 70° 33° (1991) 86° (2000) 0.11" NA
Sep 20 46° 69° 29° (1962) 87° (1984) 0.11" NA
Sep 21 46° 69° 30° (1991) 82° (1970) 0.11" NA
Sep 22 46° 69° 24° (1974) 86° (2007) 0.11" NA
Sep 23 45° 68° 27° (1974) 83° (1971) 0.1" NA
Sep 24 45° 68° 30° (1975) 80° (2007) 0.1" NA
Sep 25 44° 68° 32° (1975) 85° (1984) 0.1" NA
Sep 26 44° 67° 27° (1984) 82° (1986) 0.1" NA
Sep 27 44° 67° 27° (1984) 85° (1986) 0.1" NA
Sep 28 43° 67° 25° (1961) 84° (1971) 0.1" NA
Sep 29 43° 66° 26° (1967) 83° (1971) 0.09" NA
Sep 30 43° 66° 27° (1972) 84° (1971) 0.09" NA
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