Williamson, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 30° -28° (1999) 68° (2003) 0.91" 6.7"
February 15° 36° -38° (1996) 73° (1972) 1.19" 6.4"
March 26° 48° -32° (1962) 87° (1986) 2.26" 4.8"
April 36° 60° 8° (1982) 90° (1970) 3.52" 2"
May 48° 71° 24° (2005) 94° (1967) 4.65" 0"
June 58° 81° 34° (1969) 102° (1988) 4.76" 0"
July 63° 86° 39° (1972) 106° (1956) 4.7" 0"
August 61° 84° 35° (1950) 104° (1954) 3.96" 0"
September 51° 76° 23° (1949) 100° (1953) 4.31" 0"
October 39° 64° 11° (1997) 95° (1963) 2.94" 0.1"
November 27° 47° -13° (1991) 80° (1950) 2.37" 1.8"
December 16° 34° -31° (1989) 69° (1984) 1.19" 4.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 11° 32° -31° (1996) 70° (1989) 0.03" NA
Feb 2 11° 32° -28° (1996) 65° (1987) 0.03" NA
Feb 3 11° 32° -38° (1996) 65° (1992) 0.03" NA
Feb 4 11° 32° -32° (1996) 64° (1992) 0.04" NA
Feb 5 12° 33° -29° (1996) 60° (2005) 0.04" NA
Feb 6 12° 33° -23° (1978) 60° (1999) 0.04" NA
Feb 7 12° 33° -10° (1971) 60° (1987) 0.04" NA
Feb 8 12° 34° -21° (1971) 62° (1954) 0.04" NA
Feb 9 13° 34° -31° (1979) 62° (1954) 0.04" NA
Feb 10 13° 34° -18° (1982) 58° (1999) 0.04" NA
Feb 11 13° 35° -18° (1981) 67° (1999) 0.04" NA
Feb 12 13° 35° -25° (1988) 61° (1974) 0.04" NA
Feb 13 14° 35° -16° (1960) 70° (1990) 0.04" NA
Feb 14 14° 36° -12° (1960) 70° (1954) 0.04" NA
Feb 15 14° 36° -8° (1958) 68° (1954) 0.04" NA
Feb 16 15° 36° -22° (1978) 62° (1981) 0.04" NA
Feb 17 15° 37° -18° (1978) 65° (1981) 0.04" NA
Feb 18 15° 37° -20° (1978) 66° (1981) 0.04" NA
Feb 19 16° 37° -21° (1978) 65° (1994) 0.05" NA
Feb 20 16° 38° -2° (1959) 65° (1994) 0.05" NA
Feb 21 16° 38° -6° (1963) 63° (1981) 0.05" NA
Feb 22 17° 39° -14° (1978) 66° (1991) 0.05" NA
Feb 23 17° 39° -19° (1989) 65° (1995) 0.05" NA
Feb 24 18° 39° -12° (1989) 65° (2000) 0.05" NA
Feb 25 18° 40° -10° (2003) 68° (2002) 0.05" NA
Feb 26 19° 40° -24° (1963) 71° (1995) 0.05" NA
Feb 27 19° 41° -7° (1962) 71° (1976) 0.05" NA
Feb 28 19° 41° -15° (1962) 71° (1972) 0.05" NA
Feb 29 19° 41° -9° (1960) 73° (1972) 0.05" NA
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