Decorah, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -43° (1951) 60° (2002) 0.89" 9.4"
February 13° 33° -41° (1996) 62° (1981) 0.93" 8.1"
March 25° 46° -33° (1962) 84° (1986) 1.91" 5.4"
April 36° 61° 5° (1982) 93° (1980) 3.61" 1.1"
May 47° 72° 20° (2005) 93° (2006) 4.19" 0"
June 57° 81° 33° (1993) 101° (1988) 5.16" 0"
July 61° 84° 41° (1967) 102° (1995) 4.27" 0"
August 60° 82° 35° (1958) 104° (1955) 4.74" 0"
September 50° 75° 21° (1949) 100° (1955) 3.33" 0"
October 39° 63° 10° (1952) 94° (1963) 2.36" 0.1"
November 27° 46° -16° (1977) 78° (1999) 2.11" 3.3"
December 13° 30° -36° (1950) 64° (2001) 1.22" 11.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 31° 54° 14° (1975) 82° (2010) 0.09" 0.1"
Apr 2 31° 55° 12° (1962) 83° (2010) 0.1" 0.1"
Apr 3 31° 55° 10° (1954) 73° (1956) 0.09" 0"
Apr 4 32° 56° 10° (1975) 79° (2005) 0.1" 0.1"
Apr 5 32° 56° 13° (1979) 83° (1991) 0.1" 0"
Apr 6 33° 57° 5° (1982) 89° (1991) 0.1" 0.1"
Apr 7 33° 57° 8° (1982) 87° (1991) 0.11" 0"
Apr 8 33° 58° 7° (1972) 77° (1991) 0.11" 0.1"
Apr 9 34° 59° 14° (2003) 77° (1987) 0.11" 0.1"
Apr 10 34° 59° 16° (1960) 83° (1977) 0.11" 0"
Apr 11 35° 60° 16° (1973) 83° (1968) 0.12" 0"
Apr 12 35° 60° 20° (1950) 78° (1968) 0.12" 0.1"
Apr 13 35° 60° 19° (1950) 81° (2006) 0.12" 0"
Apr 14 36° 61° 19° (1950) 89° (2003) 0.13" 0.1"
Apr 15 36° 61° 22° (1950) 89° (2002) 0.12" 0"
Apr 16 37° 62° 12° (1949) 88° (2002) 0.13" 0"
Apr 17 37° 62° 19° (1951) 87° (2002) 0.13" 0.1"
Apr 18 37° 63° 19° (1953) 89° (1985) 0.13" 0"
Apr 19 38° 63° 19° (1988) 85° (1948) 0.13" 0"
Apr 20 38° 64° 18° (1956) 88° (1987) 0.13" 0.1"
Apr 21 39° 64° 20° (1959) 90° (1980) 0.13" 0"
Apr 22 39° 64° 20° (1986) 93° (1980) 0.12" 0"
Apr 23 39° 65° 24° (1996) 85° (1960) 0.13" 0"
Apr 24 40° 65° 15° (1956) 85° (1962) 0.14" 0"
Apr 25 40° 66° 25° (1958) 87° (2009) 0.13" 0.1"
Apr 26 40° 66° 26° (2002) 85° (1962) 0.13" 0"
Apr 27 41° 66° 26° (2004) 85° (1977) 0.14" 0"
Apr 28 41° 67° 25° (2005) 87° (1952) 0.13" 0"
Apr 29 41° 67° 23° (1958) 89° (1952) 0.14" 0"
Apr 30 42° 67° 20° (1956) 90° (1952) 0.14" 0"
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