Walnut, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 28° -29° (1974) 66° (1981) 0.78" 7.1"
February 14° 34° -25° (1996) 71° (1999) 0.78" 6.9"
March 25° 47° -23° (1960) 89° (1986) 2.17" 6.4"
April 35° 61° 2° (1975) 93° (1989) 3.28" 1.2"
May 48° 72° 25° (1961) 100° (1967) 4.18" 0"
June 58° 81° 31° (1969) 102° (1988) 4.35" 0"
July 63° 84° 40° (1972) 106° (1955) 4.1" 0"
August 61° 82° 35° (1967) 105° (1955) 3.79" 0"
September 51° 75° 27° (1984) 106° (2000) 4.46" 0"
October 38° 62° 12° (1993) 94° (1953) 2.68" 0.5"
November 25° 45° -9° (1991) 80° (2006) 1.8" 2.4"
December 13° 32° -26° (1989) 67° (1975) 1.01" 7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 42° 66° 28° (1997) 90° (1959) 0.12" NA
May 2 42° 67° 25° (1961) 89° (1968) 0.13" NA
May 3 43° 67° 28° (1971) 89° (1949) 0.13" NA
May 4 43° 67° 30° (1954) 90° (1952) 0.13" NA
May 5 44° 68° 27° (1968) 89° (1966) 0.13" NA
May 6 44° 68° 31° (1992) 89° (1955) 0.13" NA
May 7 45° 69° 29° (1976) 93° (1966) 0.13" NA
May 8 45° 69° 31° (1968) 87° (1963) 0.13" NA
May 9 45° 69° 31° (1966) 91° (1963) 0.13" NA
May 10 46° 70° 32° (1966) 88° (1987) 0.13" NA
May 11 46° 70° 32° (1981) 90° (1958) 0.13" NA
May 12 47° 70° 30° (1969) 97° (2000) 0.13" NA
May 13 47° 71° 27° (1997) 90° (1987) 0.13" NA
May 14 48° 71° 34° (1973) 91° (1988) 0.13" NA
May 15 48° 71° 31° (1959) 91° (2001) 0.13" NA
May 16 48° 72° 37° (1956) 94° (2001) 0.14" NA
May 17 49° 72° 34° (1973) 91° (1996) 0.14" NA
May 18 49° 72° 36° (1968) 92° (1956) 0.14" NA
May 19 50° 73° 38° (1954) 92° (1975) 0.14" NA
May 20 50° 73° 36° (1993) 95° (2006) 0.14" NA
May 21 50° 73° 34° (1968) 92° (1970) 0.14" NA
May 22 51° 74° 29° (1963) 92° (1975) 0.14" NA
May 23 51° 74° 29° (1963) 90° (1967) 0.14" NA
May 24 51° 75° 39° (2002) 99° (1967) 0.14" NA
May 25 52° 75° 42° (1979) 100° (1967) 0.14" NA
May 26 52° 75° 37° (1961) 91° (1967) 0.14" NA
May 27 52° 76° 35° (1971) 90° (1969) 0.14" NA
May 28 53° 76° 36° (1965) 91° (1991) 0.14" NA
May 29 53° 76° 38° (1965) 94° (1989) 0.14" NA
May 30 54° 77° 40° (1955) 92° (2002) 0.14" NA
May 31 54° 77° 39° (1972) 89° (2003) 0.14" NA
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