Mason City, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 34° -24° (1977) 70° (1989) 1.92" 5.3"
February 20° 38° -21° (1996) 75° (1996) 1.68" 4.3"
March 30° 51° -8° (1978) 87° (1986) 2.49" 1.4"
April 41° 64° 15° (1982) 91° (1986) 3.61" 0.3"
May 52° 74° 29° (1976) 96° (1967) 4.07" 0"
June 62° 83° 39° (2003) 103° (1988) 4.04" 0"
July 65° 86° 45° (1962) 103° (1966) 4.6" 0"
August 63° 84° 40° (1986) 103° (1987) 3.29" 0"
September 54° 79° 28° (1995) 99° (1984) 3.04" 0"
October 43° 66° 18° (1962) 94° (2006) 2.87" 0"
November 31° 51° -5° (1964) 82° (2000) 3.11" 0.2"
December 20° 37° -23° (1989) 73° (1998) 2.33" 3.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 24° 43° 7° (1978) 75° (1992) 0.08" 0.1"
Mar 2 24° 44° 5° (1980) 76° (1976) 0.08" 0.1"
Mar 3 25° 44° 3° (1996) 79° (1974) 0.07" 0"
Mar 4 25° 45° -5° (1978) 72° (1976) 0.09" 0.1"
Mar 5 25° 45° -8° (1978) 71° (1992) 0.08" 0.1"
Mar 6 26° 46° 8° (1978) 73° (1974) 0.08" 0"
Mar 7 26° 46° 9° (1996) 81° (2000) 0.09" 0.1"
Mar 8 26° 47° 1° (1996) 79° (2000) 0.08" 0.1"
Mar 9 27° 47° 10° (1982) 75° (1974) 0.08" 0"
Mar 10 27° 48° 10° (2003) 77° (1990) 0.07" 0.1"
Mar 11 28° 48° 9° (1979) 80° (1972) 0.08" 0.1"
Mar 12 28° 49° 3° (1998) 83° (1990) 0.07" 0"
Mar 13 28° 49° 10° (1968) 80° (1990) 0.08" 0"
Mar 14 29° 50° 7° (1993) 75° (1990) 0.07" 0.1"
Mar 15 29° 50° 14° (1979) 76° (1995) 0.08" 0"
Mar 16 29° 51° 15° (1970) 76° (1995) 0.08" 0.1"
Mar 17 30° 52° 17° (1967) 77° (1995) 0.08" 0"
Mar 18 30° 52° 12° (1965) 77° (1995) 0.07" 0"
Mar 19 31° 53° 8° (1965) 75° (2003) 0.08" 0.1"
Mar 20 31° 53° 15° (1965) 72° (1972) 0.08" 0"
Mar 21 31° 54° 15° (1986) 81° (1997) 0.08" 0"
Mar 22 32° 54° 10° (2002) 78° (1975) 0.08" 0.1"
Mar 23 32° 55° 14° (1965) 80° (1994) 0.08" 0"
Mar 24 33° 55° 6° (1974) 76° (1963) 0.08" 0"
Mar 25 33° 56° 12° (1974) 79° (1967) 0.08" 0"
Mar 26 34° 56° 13° (2001) 82° (1991) 0.08" 0.1"
Mar 27 34° 56° 13° (2001) 80° (1991) 0.08" 0"
Mar 28 34° 57° 21° (1970) 87° (1985) 0.08" 0"
Mar 29 35° 57° 15° (1964) 87° (1986) 0.09" 0.1"
Mar 30 35° 58° 15° (1964) 81° (1967) 0.09" 0"
Mar 31 36° 58° 21° (1987) 83° (1986) 0.1" 0"
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