Heathsville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 21° 37° -21° (1994) 75° (1943) 2.45" 5.9"
February 26° 44° -18° (1982) 77° (1972) 2.58" 6.1"
March 35° 55° -12° (1960) 88° (1929) 3.8" 3.6"
April 44° 66° 18° (2001) 94° (1989) 4" 0.3"
May 54° 77° 28° (1903) 98° (1987) 4.67" 0"
June 64° 85° 34° (1988) 108° (1954) 3.81" 0"
July 67° 89° 38° (1917) 114° (1954) 4.24" 0"
August 65° 87° 41° (1946) 108° (1930) 3.76" 0"
September 57° 81° 26° (1942) 107° (1954) 3.5" 0"
October 45° 69° 16° (1952) 95° (1953) 3.03" 0"
November 37° 54° 0° (1929) 84° (1950) 3.85" 1.2"
December 26° 42° -23° (1989) 74° (1998) 3.15" 4.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 31° 47° 6° (1964) 70° (1970) 0.12" NA
Dec 2 31° 47° 3° (1929) 74° (1982) 0.12" NA
Dec 3 30° 46° -4° (1929) 71° (1982) 0.12" NA
Dec 4 30° 46° 8° (1929) 71° (1998) 0.12" NA
Dec 5 30° 46° 14° (1928) 70° (2001) 0.12" NA
Dec 6 29° 45° 0° (2002) 74° (1998) 0.11" NA
Dec 7 29° 45° 2° (1977) 71° (1916) 0.11" NA
Dec 8 29° 44° 2° (1909) 71° (1916) 0.11" NA
Dec 9 28° 44° -10° (1917) 67° (1952) 0.11" NA
Dec 10 28° 44° -9° (1917) 68° (1971) 0.11" NA
Dec 11 28° 43° -11° (1917) 70° (1931) 0.11" NA
Dec 12 27° 43° -7° (1917) 66° (1929) 0.11" NA
Dec 13 27° 43° -5° (1962) 66° (1929) 0.1" NA
Dec 14 27° 42° -2° (1963) 68° (1984) 0.1" NA
Dec 15 26° 42° -8° (1914) 72° (1933) 0.1" NA
Dec 16 26° 42° -12° (1989) 65° (1948) 0.1" NA
Dec 17 26° 41° -5° (1914) 67° (1908) 0.1" NA
Dec 18 25° 41° -5° (1922) 70° (1908) 0.1" NA
Dec 19 25° 41° -8° (1963) 59° (1941) 0.1" NA
Dec 20 25° 41° -10° (1981) 68° (1949) 0.1" NA
Dec 21 25° 40° -10° (1989) 67° (1967) 0.09" NA
Dec 22 24° 40° -23° (1989) 63° (1933) 0.09" NA
Dec 23 24° 40° -19° (1989) 66° (1933) 0.09" NA
Dec 24 24° 39° -13° (1983) 64° (1932) 0.09" NA
Dec 25 23° 39° -14° (2004) 64° (1982) 0.09" NA
Dec 26 23° 39° -7° (1924) 69° (1942) 0.09" NA
Dec 27 23° 39° -6° (1935) 66° (1959) 0.09" NA
Dec 28 23° 39° -20° (1924) 65° (1946) 0.09" NA
Dec 29 22° 38° -4° (1924) 64° (1984) 0.09" NA
Dec 30 22° 38° -9° (1909) 68° (1965) 0.09" NA
Dec 31 22° 38° -4° (1976) 70° (1951) 0.08" NA
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