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
Jul 1 58° 85° 43° (1924) 102° (1931) 0.14" NA
Jul 2 58° 85° 35° (1904) 99° (1901) 0.14" NA
Jul 3 58° 85° 41° (1915) 103° (1911) 0.13" NA
Jul 4 58° 85° 44° (1967) 102° (1901) 0.13" NA
Jul 5 58° 85° 42° (1979) 103° (1911) 0.13" NA
Jul 6 58° 85° 42° (1967) 99° (1936) 0.13" NA
Jul 7 59° 85° 39° (1984) 97° (1936) 0.12" NA
Jul 8 59° 85° 41° (1901) 97° (1910) 0.12" NA
Jul 9 59° 85° 47° (1996) 101° (1901) 0.12" NA
Jul 10 59° 85° 43° (1996) 104° (1901) 0.12" NA
Jul 11 59° 85° 43° (1945) 105° (1936) 0.12" NA
Jul 12 59° 85° 45° (1975) 108° (1936) 0.12" NA
Jul 13 59° 85° 44° (1940) 105° (1936) 0.12" NA
Jul 14 59° 85° 44° (1926) 107° (1936) 0.12" NA
Jul 15 59° 85° 42° (1930) 100° (1901) 0.12" NA
Jul 16 59° 85° 44° (1930) 105° (1901) 0.12" NA
Jul 17 59° 85° 42° (1976) 101° (1936) 0.12" NA
Jul 18 59° 85° 44° (1924) 99° (1916) 0.12" NA
Jul 19 59° 86° 40° (1909) 101° (1901) 0.12" NA
Jul 20 59° 86° 44° (1929) 103° (1901) 0.12" NA
Jul 21 59° 86° 45° (1966) 107° (1901) 0.12" NA
Jul 22 59° 86° 43° (1911) 104° (1934) 0.12" NA
Jul 23 59° 85° 45° (1925) 107° (1901) 0.12" NA
Jul 24 59° 85° 42° (1904) 107° (1901) 0.12" NA
Jul 25 59° 85° 41° (1991) 104° (1934) 0.12" NA
Jul 26 59° 85° 39° (1991) 102° (1901) 0.12" NA
Jul 27 59° 85° 39° (1991) 103° (1916) 0.12" NA
Jul 28 59° 85° 41° (1991) 103° (1916) 0.12" NA
Jul 29 59° 85° 43° (1981) 104° (1916) 0.13" NA
Jul 30 59° 85° 40° (1991) 103° (1913) 0.13" NA
Jul 31 59° 85° 42° (1918) 98° (1917) 0.13" NA
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