Lanark, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 30° -31° (1910) 61° (2002) 1.48" 9.6"
February 16° 36° -30° (1996) 70° (2000) 1.77" 6.2"
March 26° 47° -16° (1962) 85° (1986) 2.61" 3.5"
April 37° 61° -2° (1982) 92° (1930) 3.7" 0.7"
May 47° 72° 20° (2005) 104° (1934) 4.42" 0"
June 57° 81° 31° (1988) 104° (1934) 4.98" 0"
July 61° 85° 35° (1904) 108° (1936) 4.52" 0"
August 59° 83° 32° (1986) 103° (1936) 4.5" 0"
September 49° 76° 23° (1983) 99° (1939) 3.46" 0"
October 38° 63° 4° (1925) 91° (1997) 3.14" 0.1"
November 29° 48° -15° (1976) 79° (2000) 2.9" 1.2"
December 16° 34° -28° (1914) 69° (1998) 2.24" 8.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 60° 85° 38° (1988) 102° (1931) 0.15" 0"
Jul 2 60° 85° 35° (1904) 99° (1901) 0.14" 0"
Jul 3 60° 85° 41° (1915) 103° (1911) 0.15" 0"
Jul 4 60° 85° 44° (1967) 102° (1901) 0.15" 0"
Jul 5 61° 85° 42° (1979) 103° (1911) 0.15" 0"
Jul 6 61° 85° 42° (1967) 99° (1936) 0.15" 0"
Jul 7 61° 85° 39° (1984) 97° (1936) 0.15" 0"
Jul 8 61° 85° 41° (1901) 97° (1910) 0.16" 0"
Jul 9 61° 85° 47° (1996) 101° (1901) 0.15" 0"
Jul 10 61° 85° 43° (1996) 104° (1901) 0.16" 0"
Jul 11 61° 85° 43° (1945) 105° (1936) 0.16" 0"
Jul 12 61° 85° 45° (1975) 108° (1936) 0.16" 0"
Jul 13 61° 85° 44° (1940) 105° (1936) 0.15" 0"
Jul 14 61° 85° 44° (1926) 107° (1936) 0.15" 0"
Jul 15 61° 85° 42° (1930) 100° (1901) 0.14" 0"
Jul 16 61° 85° 44° (1930) 105° (1901) 0.15" 0"
Jul 17 61° 85° 42° (1976) 101° (1936) 0.15" 0"
Jul 18 61° 85° 44° (1924) 99° (1916) 0.13" 0"
Jul 19 61° 85° 40° (1909) 101° (1901) 0.13" 0"
Jul 20 61° 85° 44° (1929) 103° (1901) 0.13" 0"
Jul 21 61° 84° 45° (1966) 107° (1901) 0.14" 0"
Jul 22 61° 84° 43° (1911) 104° (1934) 0.13" 0"
Jul 23 61° 84° 45° (1925) 107° (1901) 0.14" 0"
Jul 24 61° 84° 42° (1904) 107° (1901) 0.14" 0"
Jul 25 61° 84° 41° (1991) 104° (1934) 0.15" 0"
Jul 26 60° 84° 39° (1991) 102° (1901) 0.14" 0"
Jul 27 60° 84° 39° (1991) 103° (1916) 0.14" 0"
Jul 28 60° 84° 41° (1991) 103° (1916) 0.15" 0"
Jul 29 60° 84° 43° (1981) 104° (1916) 0.14" 0"
Jul 30 60° 84° 40° (1991) 103° (1913) 0.14" 0"
Jul 31 60° 84° 42° (1918) 98° (1917) 0.15" 0"
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