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
May 1 41° 65° 26° (1966) 92° (1992) 0.14" 0"
May 2 42° 66° 26° (1967) 89° (1965) 0.14" 0"
May 3 42° 66° 22° (2005) 91° (1949) 0.15" 0.1"
May 4 42° 66° 26° (2005) 89° (1952) 0.14" 0"
May 5 43° 67° 26° (1968) 90° (1962) 0.14" 0"
May 6 43° 67° 25° (1974) 85° (2000) 0.14" 0"
May 7 44° 67° 26° (1989) 88° (1970) 0.14" 0"
May 8 44° 68° 30° (1960) 87° (1963) 0.14" 0"
May 9 44° 68° 28° (1966) 88° (1985) 0.16" 0"
May 10 45° 68° 25° (1966) 89° (1987) 0.15" 0"
May 11 45° 69° 31° (1981) 88° (1958) 0.14" 0"
May 12 45° 69° 29° (1969) 87° (1961) 0.15" 0"
May 13 46° 69° 25° (1997) 87° (1949) 0.16" 0"
May 14 46° 70° 30° (1966) 92° (1998) 0.15" 0"
May 15 46° 70° 28° (1983) 91° (2001) 0.15" 0"
May 16 47° 70° 32° (1956) 86° (1972) 0.16" 0"
May 17 47° 70° 32° (2009) 90° (1979) 0.15" 0"
May 18 48° 71° 31° (2002) 94° (1998) 0.16" 0"
May 19 48° 71° 30° (2002) 93° (1975) 0.15" 0"
May 20 48° 71° 31° (2002) 93° (1948) 0.15" 0"
May 21 49° 72° 33° (1997) 93° (1970) 0.15" 0"
May 22 49° 72° 31° (1963) 91° (1972) 0.15" 0"
May 23 49° 72° 31° (1963) 89° (1972) 0.15" 0"
May 24 50° 73° 35° (1949) 92° (2010) 0.16" 0"
May 25 50° 73° 39° (1961) 94° (1967) 0.16" 0"
May 26 50° 73° 31° (1961) 93° (1967) 0.16" 0"
May 27 51° 74° 33° (1971) 91° (1969) 0.15" 0"
May 28 51° 74° 35° (1965) 93° (2006) 0.16" 0"
May 29 51° 74° 33° (1965) 90° (2006) 0.16" 0"
May 30 52° 75° 40° (1972) 91° (2002) 0.16" 0"
May 31 52° 75° 35° (1972) 91° (1988) 0.16" 0"
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