Shannon, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 28° -27° (1985) 61° (2002) 1.37" 9"
February 16° 34° -27° (1996) 65° (1999) 1.58" 6.5"
March 26° 46° -8° (2002) 85° (1986) 2.08" 3.5"
April 37° 60° 9° (1982) 92° (1980) 3.3" 0.8"
May 48° 71° 25° (2005) 95° (1985) 3.99" 0"
June 58° 80° 38° (1993) 100° (1988) 4.61" 0"
July 62° 84° 46° (1979) 101° (1988) 3.94" 0"
August 60° 82° 40° (1986) 101° (1988) 4.29" 0"
September 50° 74° 28° (1984) 96° (1985) 3.66" 0"
October 39° 62° 15° (1988) 90° (1997) 2.88" 0"
November 29° 47° -5° (1977) 77° (2000) 2.66" 1.8"
December 16° 32° -23° (2000) 67° (2001) 1.76" 9.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 12° 29° -14° (1977) 57° (2005) 0.05" 0.3"
Jan 2 12° 29° -16° (1979) 50° (1998) 0.05" 0.3"
Jan 3 12° 29° -14° (1979) 55° (2000) 0.04" 0.3"
Jan 4 12° 28° -22° (1999) 47° (2007) 0.05" 0.3"
Jan 5 12° 28° -21° (1999) 59° (1997) 0.05" 0.3"
Jan 6 11° 28° -19° (1988) 52° (2007) 0.04" 0.3"
Jan 7 11° 28° -19° (1988) 55° (2008) 0.05" 0.3"
Jan 8 11° 28° -21° (1986) 59° (2008) 0.05" 0.3"
Jan 9 11° 28° -16° (1986) 56° (2003) 0.05" 0.3"
Jan 10 11° 28° -26° (1982) 54° (2002) 0.05" 0.3"
Jan 11 11° 28° -26° (1979) 53° (1975) 0.04" 0.3"
Jan 12 11° 28° -23° (1979) 46° (2002) 0.05" 0.3"
Jan 13 11° 28° -19° (1974) 53° (2006) 0.04" 0.3"
Jan 14 11° 28° -12° (1994) 47° (1987) 0.04" 0.3"
Jan 15 11° 28° -20° (1994) 46° (1987) 0.05" 0.3"
Jan 16 11° 28° -29° (2009) 51° (1990) 0.04" 0.3"
Jan 17 11° 28° -28° (2009) 53° (1990) 0.05" 0.3"
Jan 18 11° 28° -24° (1994) 54° (1996) 0.04" 0.2"
Jan 19 11° 28° -24° (1994) 55° (1996) 0.04" 0.3"
Jan 20 11° 28° -27° (1985) 51° (2006) 0.04" 0.3"
Jan 21 11° 28° -22° (1985) 46° (1981) 0.04" 0.2"
Jan 22 11° 29° -18° (1991) 47° (1986) 0.04" 0.3"
Jan 23 11° 29° -17° (1991) 52° (2002) 0.04" 0.3"
Jan 24 11° 29° -11° (2000) 48° (2002) 0.04" 0.3"
Jan 25 11° 29° -16° (2008) 56° (1981) 0.05" 0.2"
Jan 26 11° 29° -18° (1982) 56° (1981) 0.04" 0.3"
Jan 27 11° 29° -17° (1982) 54° (2002) 0.04" 0.3"
Jan 28 11° 29° -26° (1977) 61° (2002) 0.04" 0.3"
Jan 29 12° 29° -15° (1977) 48° (2006) 0.04" 0.3"
Jan 30 12° 30° -11° (1978) 47° (2006) 0.05" 0.3"
Jan 31 12° 30° -20° (1996) 50° (1988) 0.04" 0.3"
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