Clear Lake, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° -31° (2009) 62° (2002) 0.82" 10.8"
February 12° 30° -32° (1996) 66° (1981) 1.05" 7.7"
March 24° 42° -28° (1962) 84° (1986) 2.23" 6"
April 35° 58° 6° (1982) 93° (1985) 3.75" 2.7"
May 47° 70° 22° (2005) 94° (1998) 4.68" 0.1"
June 57° 80° 36° (1993) 103° (1985) 5.14" 0"
July 61° 83° 42° (1967) 104° (1980) 4.7" 0"
August 58° 81° 35° (1950) 101° (1988) 4.04" 0"
September 49° 73° 24° (1949) 97° (1978) 3.27" 0"
October 37° 60° 12° (1988) 95° (1997) 2.45" 0.4"
November 24° 43° -16° (1977) 79° (2006) 1.88" 4.3"
December 11° 28° -26° (1983) 65° (1962) 1.24" 9.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 55° 78° 35° (1949) 96° (1984) 0.12" 0"
Sep 2 54° 78° 36° (1967) 95° (1971) 0.11" 0"
Sep 3 54° 78° 34° (1974) 91° (1971) 0.11" 0"
Sep 4 54° 78° 38° (1974) 91° (1960) 0.11" 0"
Sep 5 53° 77° 37° (1962) 93° (1979) 0.12" 0"
Sep 6 53° 77° 39° (1988) 94° (1998) 0.12" 0"
Sep 7 53° 77° 38° (1986) 97° (1978) 0.12" 0"
Sep 8 52° 76° 37° (1995) 94° (1978) 0.11" 0"
Sep 9 52° 76° 36° (2008) 96° (1955) 0.11" 0"
Sep 10 51° 76° 36° (1967) 91° (1978) 0.12" 0"
Sep 11 51° 75° 35° (1955) 95° (2000) 0.11" 0"
Sep 12 50° 75° 34° (2007) 95° (1998) 0.11" 0"
Sep 13 50° 75° 34° (1953) 92° (1994) 0.11" 0"
Sep 14 49° 74° 33° (2007) 93° (1994) 0.1" 0"
Sep 15 49° 74° 28° (2007) 93° (1955) 0.11" 0"
Sep 16 48° 73° 33° (1976) 92° (1948) 0.11" 0"
Sep 17 48° 73° 36° (1971) 92° (1955) 0.1" 0"
Sep 18 47° 73° 37° (1959) 90° (1948) 0.11" 0"
Sep 19 47° 72° 31° (1991) 95° (1948) 0.11" 0"
Sep 20 46° 72° 29° (1991) 88° (2010) 0.11" 0"
Sep 21 46° 71° 29° (1999) 88° (2007) 0.11" 0"
Sep 22 46° 71° 26° (1974) 82° (2004) 0.11" 0"
Sep 23 45° 70° 30° (1983) 85° (2007) 0.1" 0"
Sep 24 45° 70° 30° (1989) 85° (1958) 0.11" 0"
Sep 25 44° 70° 28° (1951) 87° (1956) 0.1" 0"
Sep 26 44° 69° 25° (1984) 89° (1998) 0.11" 0"
Sep 27 43° 69° 30° (1961) 86° (1963) 0.1" 0"
Sep 28 43° 68° 26° (1961) 86° (1956) 0.1" 0"
Sep 29 42° 68° 24° (1949) 85° (1953) 0.1" 0"
Sep 30 42° 67° 27° (2003) 90° (1952) 0.1" 0"
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