Defiance, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 30° -29° (1974) 66° (1981) 0.86" 6.8"
February 15° 35° -25° (1996) 71° (1999) 0.91" 6.6"
March 25° 48° -23° (1960) 89° (1986) 2.16" 5"
April 37° 61° 2° (1975) 93° (1989) 3.3" 1.4"
May 50° 72° 25° (1961) 100° (1967) 4.6" 0"
June 60° 81° 31° (1969) 102° (1988) 4.63" 0"
July 64° 84° 40° (1972) 106° (1955) 4.17" 0"
August 62° 82° 35° (1967) 105° (1955) 3.75" 0"
September 52° 75° 27° (1984) 106° (2000) 3.81" 0"
October 39° 63° 12° (1993) 94° (1953) 2.59" 0.8"
November 26° 47° -9° (1991) 80° (2006) 1.62" 2.8"
December 14° 32° -26° (1989) 67° (1975) 1.16" 6.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 58° 80° 37° (1949) 97° (1953) 0.13" 0"
Sep 2 58° 80° 45° (1981) 95° (1953) 0.13" 0"
Sep 3 57° 80° 35° (1974) 106° (2000) 0.13" 0"
Sep 4 57° 79° 40° (1974) 98° (2000) 0.14" 0"
Sep 5 56° 79° 37° (1962) 94° (1954) 0.14" 0"
Sep 6 56° 79° 39° (1988) 97° (1970) 0.13" 0"
Sep 7 56° 79° 38° (1956) 98° (1971) 0.14" 0"
Sep 8 55° 78° 39° (1986) 95° (1983) 0.14" 0"
Sep 9 55° 78° 38° (1969) 100° (1955) 0.13" 0"
Sep 10 54° 78° 38° (1976) 94° (1953) 0.14" 0"
Sep 11 54° 77° 36° (1955) 94° (2000) 0.14" 0"
Sep 12 53° 77° 36° (1955) 94° (2000) 0.13" 0"
Sep 13 53° 77° 36° (1974) 92° (1955) 0.13" 0"
Sep 14 52° 76° 37° (1974) 94° (1955) 0.13" 0"
Sep 15 52° 76° 33° (1993) 97° (1955) 0.13" 0"
Sep 16 51° 76° 34° (2007) 96° (1955) 0.14" 0"
Sep 17 51° 75° 34° (1980) 95° (1955) 0.12" 0"
Sep 18 50° 75° 34° (1973) 94° (1948) 0.13" 0"
Sep 19 50° 74° 29° (1991) 94° (1948) 0.13" 0"
Sep 20 49° 74° 33° (1962) 91° (1970) 0.13" 0"
Sep 21 49° 74° 33° (1983) 90° (1956) 0.13" 0"
Sep 22 49° 73° 29° (1995) 88° (2007) 0.12" 0"
Sep 23 48° 73° 29° (1983) 84° (2004) 0.12" 0"
Sep 24 48° 72° 30° (1965) 87° (1958) 0.11" 0"
Sep 25 47° 72° 33° (1975) 90° (1998) 0.11" 0"
Sep 26 47° 71° 30° (1984) 92° (1956) 0.12" 0"
Sep 27 46° 71° 35° (1964) 91° (1956) 0.11" 0"
Sep 28 46° 71° 27° (1951) 98° (1953) 0.11" 0"
Sep 29 45° 70° 27° (1984) 90° (1981) 0.11" 0"
Sep 30 45° 70° 30° (1972) 91° (1994) 0.11" 0"
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