Armstrong, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° -32° (1970) 62° (2002) 0.77" 9.6"
February 29° -28° (1996) 66° (1981) 0.65" 5.7"
March 21° 41° -20° (1962) 83° (1986) 1.91" 5.1"
April 33° 58° 0° (1975) 93° (2007) 3.16" 1.8"
May 46° 70° 10° (1967) 95° (2006) 3.86" 0.2"
June 57° 80° 35° (1969) 105° (1985) 4.59" 0"
July 61° 83° 37° (1971) 104° (1955) 4.43" 0"
August 58° 80° 38° (2004) 101° (1988) 3.87" 0"
September 48° 73° 22° (1967) 98° (1984) 3.24" 0"
October 35° 60° 12° (1972) 94° (1963) 2.37" 0.4"
November 22° 43° -14° (1977) 81° (2006) 1.66" 4.7"
December 27° -28° (1983) 69° (1998) 0.86" 9.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 54° 78° 40° (1974) 91° (1960) 0.11" 0"
Sep 2 54° 78° 40° (1967) 91° (1983) 0.12" 0"
Sep 3 54° 78° 32° (1974) 93° (1971) 0.11" 0"
Sep 4 53° 77° 32° (1974) 94° (1960) 0.1" 0"
Sep 5 53° 77° 36° (1962) 93° (1960) 0.12" 0"
Sep 6 52° 77° 37° (1956) 92° (1960) 0.12" 0"
Sep 7 52° 77° 36° (1956) 96° (1976) 0.12" 0"
Sep 8 51° 76° 35° (1986) 95° (1976) 0.12" 0"
Sep 9 51° 76° 38° (2008) 95° (1955) 0.11" 0"
Sep 10 51° 76° 34° (1970) 92° (1981) 0.12" 0"
Sep 11 50° 75° 33° (1955) 91° (1978) 0.11" 0"
Sep 12 50° 75° 33° (1955) 92° (1998) 0.11" 0"
Sep 13 49° 75° 33° (1974) 93° (1998) 0.1" 0"
Sep 14 49° 74° 34° (1974) 92° (1998) 0.1" 0"
Sep 15 48° 74° 29° (2007) 95° (1955) 0.1" 0"
Sep 16 48° 74° 29° (2007) 94° (1955) 0.1" 0"
Sep 17 47° 73° 34° (1971) 94° (1955) 0.1" 0"
Sep 18 47° 73° 32° (1973) 91° (2007) 0.11" 0"
Sep 19 46° 72° 31° (1991) 98° (1984) 0.1" 0"
Sep 20 46° 72° 31° (1962) 93° (1998) 0.11" 0"
Sep 21 45° 72° 31° (1983) 88° (2010) 0.1" 0"
Sep 22 45° 71° 26° (1974) 91° (2005) 0.11" 0"
Sep 23 44° 71° 26° (1974) 82° (2004) 0.1" 0"
Sep 24 44° 70° 31° (1989) 87° (2007) 0.11" 0"
Sep 25 43° 70° 28° (2000) 89° (1956) 0.11" 0"
Sep 26 43° 69° 25° (1984) 90° (1956) 0.11" 0"
Sep 27 42° 69° 34° (1993) 92° (1956) 0.11" 0"
Sep 28 42° 69° 22° (1967) 93° (1956) 0.1" 0"
Sep 29 42° 68° 27° (1984) 84° (1998) 0.1" 0"
Sep 30 41° 68° 27° (1956) 85° (1970) 0.1" 0"
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