Lanark, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -31° (1910) 61° (2002) 1.43" 8.8"
February 13° 35° -30° (1996) 70° (2000) 1.52" 6.9"
March 25° 47° -16° (1962) 85° (1986) 2.63" 5.3"
April 35° 60° -2° (1982) 92° (1930) 3.67" 1.9"
May 46° 72° 20° (2005) 104° (1934) 4.34" 0"
June 54° 82° 31° (1988) 104° (1934) 4.77" 0"
July 59° 85° 35° (1904) 108° (1936) 3.83" 0"
August 56° 83° 32° (1986) 103° (1936) 4.54" 0"
September 47° 76° 23° (1983) 99° (1939) 3.48" 0"
October 36° 64° 4° (1925) 91° (1997) 2.73" 0.1"
November 26° 47° -15° (1976) 79° (2000) 2.84" 2.2"
December 14° 34° -28° (1914) 69° (1998) 2.02" 7.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 59° 85° 43° (1908) 100° (1988) 0.13" NA
Aug 2 59° 85° 42° (1927) 100° (1987) 0.14" NA
Aug 3 59° 85° 41° (1912) 101° (1930) 0.14" NA
Aug 4 59° 85° 39° (1912) 100° (1916) 0.14" NA
Aug 5 58° 85° 40° (1994) 101° (1918) 0.14" NA
Aug 6 58° 85° 41° (1910) 99° (1918) 0.14" NA
Aug 7 58° 84° 38° (1989) 99° (1918) 0.14" NA
Aug 8 58° 84° 37° (1904) 98° (1914) 0.15" NA
Aug 9 58° 84° 39° (1989) 99° (1934) 0.15" NA
Aug 10 58° 84° 44° (1991) 97° (1944) 0.15" NA
Aug 11 58° 84° 38° (1982) 98° (1941) 0.15" NA
Aug 12 57° 84° 40° (1982) 100° (1918) 0.15" NA
Aug 13 57° 84° 41° (1982) 98° (1918) 0.15" NA
Aug 14 57° 84° 40° (1964) 98° (1936) 0.15" NA
Aug 15 57° 84° 40° (1979) 99° (1936) 0.15" NA
Aug 16 57° 83° 40° (1976) 100° (1988) 0.15" NA
Aug 17 56° 83° 42° (1989) 102° (1988) 0.15" NA
Aug 18 56° 83° 39° (1989) 103° (1936) 0.15" NA
Aug 19 56° 83° 39° (1989) 100° (1916) 0.15" NA
Aug 20 56° 83° 39° (1950) 101° (1916) 0.15" NA
Aug 21 56° 82° 42° (1950) 100° (1936) 0.15" NA
Aug 22 55° 82° 42° (1907) 99° (1936) 0.15" NA
Aug 23 55° 82° 44° (1908) 98° (1947) 0.15" NA
Aug 24 55° 82° 38° (1908) 99° (1947) 0.15" NA
Aug 25 55° 82° 33° (1934) 94° (1948) 0.15" NA
Aug 26 54° 81° 36° (1934) 94° (1953) 0.15" NA
Aug 27 54° 81° 38° (1915) 95° (2003) 0.15" NA
Aug 28 54° 81° 32° (1986) 97° (1926) 0.15" NA
Aug 29 53° 81° 33° (1934) 96° (1984) 0.14" NA
Aug 30 53° 81° 35° (1915) 98° (1984) 0.14" NA
Aug 31 53° 80° 35° (1915) 99° (1953) 0.14" NA
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