Donnan, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° -38° (1951) 61° (1944) 1.14" 10"
February 12° 30° -40° (1996) 67° (1930) 1.15" 8"
March 24° 43° -33° (1962) 85° (1986) 2" 4.9"
April 35° 58° -2° (1982) 96° (1980) 3.91" 1.6"
May 46° 69° 18° (1907) 109° (1934) 4.76" 0"
June 57° 79° 30° (1903) 108° (1934) 5.01" 0"
July 61° 82° 38° (1904) 110° (1936) 4.96" 0"
August 59° 80° 33° (1915) 104° (1988) 4.68" 0"
September 49° 73° 20° (1949) 101° (1927) 3.62" 0"
October 37° 60° -5° (1925) 91° (1976) 2.57" 0.3"
November 26° 43° -20° (1977) 79° (1933) 2.36" 2.9"
December 12° 28° -34° (1950) 64° (2001) 1.62" 11.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 55° 78° 32° (1949) 100° (1913) 0.14" 0"
Sep 2 55° 78° 33° (1946) 98° (1913) 0.13" 0"
Sep 3 55° 77° 33° (1974) 97° (1939) 0.13" 0"
Sep 4 54° 77° 31° (1974) 98° (1925) 0.12" 0"
Sep 5 54° 77° 34° (1974) 98° (1913) 0.13" 0"
Sep 6 53° 77° 34° (1988) 99° (1922) 0.13" 0"
Sep 7 53° 76° 34° (1956) 101° (1922) 0.13" 0"
Sep 8 53° 76° 35° (1949) 99° (1933) 0.13" 0"
Sep 9 52° 76° 36° (1949) 98° (1955) 0.12" 0"
Sep 10 52° 75° 34° (1910) 97° (1931) 0.13" 0"
Sep 11 51° 75° 29° (1955) 95° (1927) 0.13" 0"
Sep 12 51° 75° 27° (1902) 101° (1927) 0.13" 0"
Sep 13 50° 74° 26° (1902) 99° (1927) 0.12" 0"
Sep 14 50° 74° 29° (1923) 98° (1927) 0.13" 0"
Sep 15 49° 73° 29° (1904) 98° (1927) 0.12" 0"
Sep 16 49° 73° 30° (1984) 95° (1931) 0.11" 0"
Sep 17 48° 73° 30° (1916) 94° (1925) 0.12" 0"
Sep 18 48° 72° 28° (1929) 92° (1930) 0.12" 0"
Sep 19 47° 72° 29° (1902) 93° (1925) 0.12" 0"
Sep 20 47° 71° 27° (1991) 90° (1931) 0.12" 0"
Sep 21 46° 71° 27° (1991) 87° (1937) 0.11" 0"
Sep 22 46° 71° 22° (1974) 91° (1937) 0.12" 0"
Sep 23 45° 70° 26° (1983) 90° (1930) 0.12" 0"
Sep 24 45° 70° 27° (1995) 90° (1935) 0.11" 0"
Sep 25 45° 69° 23° (1942) 88° (1920) 0.11" 0"
Sep 26 44° 69° 23° (1926) 87° (1986) 0.11" 0"
Sep 27 44° 69° 28° (1942) 88° (1929) 0.1" 0"
Sep 28 43° 68° 20° (1942) 89° (1904) 0.11" 0"
Sep 29 43° 68° 20° (1949) 89° (1953) 0.11" 0"
Sep 30 42° 67° 25° (1984) 87° (1952) 0.11" 0"
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