Heman, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 35° -23° (1977) 73° (1909) 2.05" 7.1"
February 22° 41° -25° (1905) 76° (1972) 1.95" 6.4"
March 32° 53° -10° (1978) 89° (1929) 3.2" 3.1"
April 42° 65° 15° (1982) 93° (1987) 3.58" 0.4"
May 52° 76° 26° (1903) 101° (1934) 4.47" 0"
June 61° 85° 38° (1917) 105° (1954) 3.9" 0"
July 65° 88° 45° (1930) 113° (1954) 4.54" 0"
August 63° 86° 35° (1986) 106° (1983) 4.14" 0"
September 55° 80° 27° (1928) 104° (1954) 2.98" 0"
October 44° 68° 12° (1925) 96° (1953) 2.74" 0"
November 34° 52° -3° (1929) 83° (1933) 3.32" 1.3"
December 23° 39° -22° (1983) 72° (1970) 2.87" 5.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 18° 35° -11° (1968) 62° (1952) 0.08" NA
Jan 2 18° 35° -13° (1928) 64° (2004) 0.08" NA
Jan 3 18° 35° -15° (1904) 62° (2004) 0.07" NA
Jan 4 17° 35° -7° (1919) 62° (1997) 0.07" NA
Jan 5 17° 34° -18° (1924) 59° (1955) 0.07" NA
Jan 6 17° 34° -10° (1924) 60° (1946) 0.07" NA
Jan 7 17° 34° -22° (1912) 66° (1907) 0.07" NA
Jan 8 17° 34° -12° (1970) 67° (1907) 0.07" NA
Jan 9 17° 34° -7° (1962) 60° (1939) 0.07" NA
Jan 10 17° 34° -20° (1982) 60° (1939) 0.07" NA
Jan 11 17° 34° -19° (1999) 56° (1980) 0.07" NA
Jan 12 17° 34° -21° (1918) 65° (2005) 0.07" NA
Jan 13 17° 34° -16° (1912) 63° (2005) 0.07" NA
Jan 14 16° 34° -12° (1957) 67° (1928) 0.07" NA
Jan 15 16° 34° -22° (1927) 67° (1949) 0.07" NA
Jan 16 16° 34° -21° (1977) 66° (1990) 0.07" NA
Jan 17 16° 34° -23° (1977) 69° (1952) 0.07" NA
Jan 18 17° 34° -21° (1930) 61° (1951) 0.06" NA
Jan 19 17° 34° -14° (1940) 64° (1951) 0.06" NA
Jan 20 17° 34° -22° (1985) 65° (1907) 0.06" NA
Jan 21 17° 34° -19° (1984) 69° (1906) 0.06" NA
Jan 22 17° 34° -16° (1930) 63° (1967) 0.06" NA
Jan 23 17° 35° -19° (1936) 68° (1967) 0.06" NA
Jan 24 17° 35° -17° (1915) 73° (1909) 0.06" NA
Jan 25 17° 35° -9° (1940) 71° (1950) 0.06" NA
Jan 26 17° 35° -11° (1936) 60° (1916) 0.06" NA
Jan 27 17° 35° -14° (1904) 63° (1999) 0.06" NA
Jan 28 18° 35° -14° (1915) 66° (1970) 0.06" NA
Jan 29 18° 36° -11° (1966) 67° (1914) 0.06" NA
Jan 30 18° 36° -12° (1936) 59° (1931) 0.06" NA
Jan 31 18° 36° -13° (1996) 67° (1989) 0.06" NA
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