Marshalltown, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 28° -31° (1912) 65° (2002) 0.86" 5.3"
February 13° 33° -35° (1996) 72° (1921) 1.06" 5.2"
March 25° 46° -32° (1962) 90° (1986) 2.28" 4.5"
April 36° 60° 4° (1982) 94° (1980) 3.63" 0.7"
May 48° 71° 20° (1907) 104° (1934) 4.73" 0"
June 59° 80° 30° (1943) 105° (1934) 5.57" 0"
July 63° 84° 42° (1947) 112° (1936) 4.99" 0"
August 60° 82° 35° (1915) 109° (1934) 4.53" 0"
September 50° 75° 20° (1942) 103° (1939) 3.7" 0"
October 38° 62° -3° (1925) 94° (1953) 2.65" 0.2"
November 26° 46° -11° (1977) 81° (1938) 2.16" 1.2"
December 14° 32° -28° (1985) 71° (1998) 1.24" 8.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 56° 80° 36° (1949) 101° (1913) 0.13" 0"
Sep 2 56° 80° 38° (1946) 101° (1913) 0.12" 0"
Sep 3 56° 79° 36° (1974) 101° (1913) 0.13" 0"
Sep 4 55° 79° 36° (1974) 102° (1913) 0.12" 0"
Sep 5 55° 79° 38° (1974) 100° (1899) 0.12" 0"
Sep 6 54° 79° 38° (1950) 101° (1939) 0.13" 0"
Sep 7 54° 78° 36° (1956) 103° (1939) 0.12" 0"
Sep 8 53° 78° 35° (1986) 98° (1912) 0.13" 0"
Sep 9 53° 78° 37° (1986) 99° (1955) 0.13" 0"
Sep 10 53° 77° 34° (1976) 99° (1931) 0.12" 0"
Sep 11 52° 77° 33° (1917) 97° (1927) 0.13" 0"
Sep 12 52° 77° 31° (1955) 98° (1927) 0.13" 0"
Sep 13 51° 76° 32° (1902) 98° (1939) 0.12" 0"
Sep 14 51° 76° 33° (1923) 99° (1939) 0.12" 0"
Sep 15 50° 76° 32° (2007) 99° (1927) 0.13" 0"
Sep 16 50° 75° 31° (1984) 97° (1931) 0.12" 0"
Sep 17 49° 75° 31° (1894) 95° (1925) 0.13" 0"
Sep 18 49° 74° 30° (1916) 94° (1947) 0.12" 0"
Sep 19 48° 74° 33° (1916) 94° (1925) 0.13" 0"
Sep 20 48° 74° 28° (1896) 93° (1931) 0.13" 0"
Sep 21 47° 73° 27° (1918) 94° (1940) 0.12" 0"
Sep 22 47° 73° 28° (1913) 99° (1937) 0.13" 0"
Sep 23 46° 72° 27° (1983) 89° (1933) 0.12" 0"
Sep 24 46° 72° 29° (1983) 88° (1901) 0.12" 0"
Sep 25 45° 71° 30° (1907) 90° (1920) 0.12" 0"
Sep 26 45° 71° 28° (1940) 88° (1956) 0.12" 0"
Sep 27 44° 71° 30° (1942) 92° (1954) 0.11" 0"
Sep 28 44° 70° 20° (1942) 97° (1953) 0.12" 0"
Sep 29 43° 70° 26° (1899) 91° (1897) 0.11" 0"
Sep 30 43° 69° 22° (1899) 93° (1897) 0.12" 0"
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