Leaf River, 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
Jun 1 53° 76° 38° (1993) 92° (1988) 0.15" 0"
Jun 2 54° 76° 41° (1986) 91° (1988) 0.16" 0"
Jun 3 54° 77° 40° (1986) 83° (2006) 0.15" 0"
Jun 4 54° 77° 43° (1990) 85° (1979) 0.16" 0"
Jun 5 55° 77° 39° (1993) 90° (1977) 0.15" 0"
Jun 6 55° 78° 41° (1998) 89° (1981) 0.16" 0"
Jun 7 55° 78° 42° (1998) 92° (2005) 0.16" 0"
Jun 8 56° 78° 47° (1975) 92° (2005) 0.16" 0"
Jun 9 56° 79° 41° (1977) 95° (1985) 0.16" 0"
Jun 10 56° 79° 41° (1988) 90° (1999) 0.16" 0"
Jun 11 57° 79° 44° (1980) 90° (2005) 0.16" 0"
Jun 12 57° 80° 44° (1985) 94° (1976) 0.16" 0"
Jun 13 57° 80° 44° (1985) 94° (1976) 0.15" 0"
Jun 14 58° 80° 46° (1999) 96° (1976) 0.16" 0"
Jun 15 58° 80° 50° (1977) 98° (1987) 0.15" 0"
Jun 16 58° 81° 44° (1980) 93° (1994) 0.16" 0"
Jun 17 59° 81° 46° (1980) 93° (1994) 0.16" 0"
Jun 18 59° 81° 48° (1999) 94° (1987) 0.15" 0"
Jun 19 59° 81° 48° (1982) 95° (1994) 0.15" 0"
Jun 20 59° 82° 45° (1985) 93° (1986) 0.16" 0"
Jun 21 60° 82° 40° (1992) 100° (1988) 0.15" 0"
Jun 22 60° 82° 43° (1992) 99° (1988) 0.16" 0"
Jun 23 60° 82° 43° (1992) 97° (1988) 0.15" 0"
Jun 24 60° 83° 46° (1979) 94° (2009) 0.16" 0"
Jun 25 61° 83° 44° (1979) 95° (2005) 0.15" 0"
Jun 26 61° 83° 48° (1986) 98° (1988) 0.15" 0"
Jun 27 61° 83° 47° (1992) 96° (1983) 0.15" 0"
Jun 28 61° 83° 46° (1992) 94° (2005) 0.14" 0"
Jun 29 61° 83° 47° (1989) 93° (1996) 0.13" 0"
Jun 30 61° 83° 45° (1988) 94° (1996) 0.14" 0"
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