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
Sep 1 56° 79° 37° (1949) 97° (1953) 0.14" NA
Sep 2 56° 79° 45° (1981) 95° (1953) 0.15" NA
Sep 3 55° 78° 35° (1974) 106° (2000) 0.15" NA
Sep 4 55° 78° 40° (1974) 98° (2000) 0.15" NA
Sep 5 55° 78° 37° (1962) 94° (1954) 0.15" NA
Sep 6 54° 78° 39° (1988) 97° (1970) 0.15" NA
Sep 7 54° 77° 38° (1956) 98° (1971) 0.15" NA
Sep 8 54° 77° 39° (1986) 95° (1983) 0.15" NA
Sep 9 53° 77° 38° (1969) 100° (1955) 0.15" NA
Sep 10 53° 77° 38° (1976) 94° (1953) 0.16" NA
Sep 11 52° 76° 36° (1955) 94° (2000) 0.16" NA
Sep 12 52° 76° 36° (1955) 94° (2000) 0.16" NA
Sep 13 52° 76° 36° (1974) 92° (1955) 0.16" NA
Sep 14 51° 75° 37° (1974) 94° (1955) 0.16" NA
Sep 15 51° 75° 33° (1993) 97° (1955) 0.16" NA
Sep 16 50° 75° 34° (2007) 96° (1955) 0.16" NA
Sep 17 50° 74° 34° (1980) 95° (1955) 0.15" NA
Sep 18 50° 74° 34° (1973) 94° (1948) 0.15" NA
Sep 19 49° 74° 29° (1991) 94° (1948) 0.15" NA
Sep 20 49° 73° 33° (1962) 91° (1970) 0.15" NA
Sep 21 48° 73° 33° (1983) 90° (1956) 0.15" NA
Sep 22 48° 73° 29° (1995) 88° (2007) 0.15" NA
Sep 23 48° 72° 29° (1983) 84° (2004) 0.15" NA
Sep 24 47° 72° 30° (1965) 87° (1958) 0.14" NA
Sep 25 47° 72° 33° (1975) 90° (1998) 0.14" NA
Sep 26 47° 71° 30° (1984) 92° (1956) 0.14" NA
Sep 27 46° 71° 35° (1964) 91° (1956) 0.14" NA
Sep 28 46° 71° 27° (1951) 98° (1953) 0.13" NA
Sep 29 45° 70° 27° (1984) 90° (1981) 0.13" NA
Sep 30 45° 70° 30° (1972) 91° (1994) 0.13" NA
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