National, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -40° (1951) 59° (2002) 1.14" 9.1"
February 11° 33° -47° (1996) 66° (2000) 1.18" 6.7"
March 22° 46° -31° (1962) 87° (1986) 1.9" 4.9"
April 35° 61° -1° (1975) 92° (1980) 3.78" 1.1"
May 45° 71° 19° (2005) 94° (1953) 4.4" 0"
June 55° 81° 33° (1964) 103° (1988) 5.58" 0"
July 60° 84° 35° (1984) 104° (1988) 4.24" 0"
August 58° 82° 33° (1964) 106° (1988) 4.38" 0"
September 48° 75° 20° (1984) 102° (1955) 3.18" 0"
October 36° 63° 7° (1952) 94° (1963) 2.59" 0.2"
November 24° 46° -22° (1977) 79° (1999) 2.45" 2.9"
December 12° 31° -34° (2000) 65° (2001) 1.53" 9.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 41° 67° 25° (1950) 91° (1952) 0.14" 0"
May 2 41° 67° 25° (1950) 88° (1959) 0.14" 0"
May 3 41° 67° 19° (2005) 88° (1949) 0.15" 0"
May 4 42° 67° 22° (2005) 89° (1952) 0.15" 0"
May 5 42° 68° 29° (1987) 92° (1949) 0.15" 0"
May 6 42° 68° 24° (1974) 83° (1949) 0.15" 0"
May 7 43° 68° 25° (1976) 86° (1970) 0.14" 0"
May 8 43° 69° 25° (1983) 91° (1963) 0.14" 0"
May 9 43° 69° 25° (1980) 87° (1979) 0.14" 0"
May 10 44° 69° 28° (1977) 86° (1979) 0.14" 0"
May 11 44° 70° 25° (1981) 85° (2007) 0.14" 0"
May 12 44° 70° 26° (1981) 86° (2004) 0.14" 0"
May 13 44° 70° 28° (1996) 88° (1949) 0.14" 0"
May 14 45° 70° 27° (1983) 89° (1998) 0.15" 0"
May 15 45° 71° 26° (1973) 90° (2007) 0.15" 0"
May 16 45° 71° 26° (1997) 90° (2001) 0.14" 0"
May 17 46° 71° 25° (1973) 91° (1987) 0.15" 0"
May 18 46° 72° 28° (2002) 90° (1977) 0.14" 0"
May 19 46° 72° 27° (2002) 90° (1964) 0.14" 0"
May 20 46° 72° 30° (1954) 90° (1948) 0.14" 0"
May 21 47° 73° 27° (2002) 92° (1970) 0.14" 0"
May 22 47° 73° 32° (2006) 93° (1956) 0.14" 0"
May 23 47° 73° 27° (1963) 92° (1964) 0.13" 0"
May 24 48° 73° 31° (1979) 88° (1964) 0.14" 0"
May 25 48° 74° 28° (1979) 91° (1978) 0.13" 0"
May 26 48° 74° 30° (1983) 93° (1978) 0.14" 0"
May 27 49° 74° 30° (1992) 90° (1980) 0.13" 0"
May 28 49° 75° 33° (1992) 92° (1988) 0.14" 0"
May 29 49° 75° 29° (1984) 93° (2006) 0.14" 0"
May 30 50° 75° 31° (1984) 94° (1953) 0.15" 0"
May 31 50° 76° 34° (1975) 93° (1988) 0.15" 0"
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