Denison, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -40° (1912) 68° (2002) 0.8" 6.3"
February 14° 33° -37° (1905) 69° (1999) 0.75" 7.1"
March 24° 45° -23° (1960) 88° (1986) 2.16" 7"
April 36° 59° 5° (1936) 95° (1910) 3.03" 1.7"
May 49° 70° 2° (1931) 105° (1934) 4.14" 0"
June 59° 80° 30° (1903) 109° (1933) 4.26" 0"
July 64° 84° 39° (1911) 112° (1936) 3.87" 0"
August 62° 81° 34° (1915) 111° (1934) 3.29" 0"
September 52° 74° 21° (1918) 103° (1939) 3.3" 0"
October 40° 62° -1° (1925) 92° (1963) 2.3" 0.6"
November 25° 44° -16° (1937) 80° (2006) 1.58" 3"
December 13° 31° -26° (1989) 69° (1939) 1" 7.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 55° 76° 39° (1956) 97° (1934) 0.14" NA
Jun 2 56° 76° 40° (1946) 101° (1934) 0.14" NA
Jun 3 56° 77° 31° (1969) 97° (1933) 0.14" NA
Jun 4 56° 77° 30° (1903) 96° (1977) 0.14" NA
Jun 5 56° 77° 39° (1935) 103° (1933) 0.14" NA
Jun 6 57° 78° 39° (1910) 107° (1933) 0.15" NA
Jun 7 57° 78° 36° (1901) 100° (1933) 0.15" NA
Jun 8 57° 78° 37° (1913) 99° (1911) 0.15" NA
Jun 9 58° 79° 35° (1915) 104° (1933) 0.15" NA
Jun 10 58° 79° 40° (1916) 109° (1933) 0.15" NA
Jun 11 58° 79° 37° (1903) 98° (1926) 0.15" NA
Jun 12 58° 80° 43° (1906) 94° (1987) 0.14" NA
Jun 13 59° 80° 39° (1969) 98° (1987) 0.14" NA
Jun 14 59° 80° 43° (1906) 98° (1987) 0.14" NA
Jun 15 59° 80° 41° (1927) 98° (1933) 0.14" NA
Jun 16 59° 81° 43° (1999) 102° (1946) 0.14" NA
Jun 17 60° 81° 41° (1903) 97° (1933) 0.14" NA
Jun 18 60° 81° 46° (1926) 98° (1933) 0.14" NA
Jun 19 60° 81° 42° (1926) 99° (1933) 0.14" NA
Jun 20 60° 81° 44° (1961) 100° (1974) 0.14" NA
Jun 21 61° 82° 40° (1902) 101° (1988) 0.14" NA
Jun 22 61° 82° 40° (1902) 100° (1930) 0.14" NA
Jun 23 61° 82° 46° (1955) 102° (1937) 0.14" NA
Jun 24 61° 82° 45° (1909) 100° (1988) 0.14" NA
Jun 25 61° 82° 43° (1958) 101° (1933) 0.14" NA
Jun 26 62° 82° 43° (1926) 104° (1936) 0.14" NA
Jun 27 62° 83° 45° (1905) 105° (1934) 0.14" NA
Jun 28 62° 83° 46° (2006) 104° (1936) 0.14" NA
Jun 29 62° 83° 42° (1923) 99° (1911) 0.14" NA
Jun 30 62° 83° 47° (1943) 104° (1933) 0.14" NA
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