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
Feb 1 30° -26° (1985) 64° (1989) 0.05" NA
Feb 2 31° -27° (1985) 51° (1927) 0.05" NA
Feb 3 31° -30° (1996) 58° (1928) 0.05" NA
Feb 4 31° -27° (1996) 54° (1909) 0.05" NA
Feb 5 31° -28° (1979) 58° (1946) 0.05" NA
Feb 6 10° 32° -24° (1977) 57° (1946) 0.05" NA
Feb 7 10° 32° -24° (1977) 49° (1998) 0.05" NA
Feb 8 10° 32° -20° (1985) 57° (1925) 0.05" NA
Feb 9 11° 33° -26° (1933) 58° (1990) 0.05" NA
Feb 10 11° 33° -25° (1994) 56° (1932) 0.05" NA
Feb 11 11° 33° -17° (1982) 61° (1999) 0.05" NA
Feb 12 11° 34° -23° (1981) 65° (1999) 0.05" NA
Feb 13 12° 34° -29° (1905) 60° (1990) 0.05" NA
Feb 14 12° 34° -16° (1916) 60° (1954) 0.05" NA
Feb 15 12° 35° -21° (1905) 69° (1921) 0.05" NA
Feb 16 13° 35° -16° (1985) 66° (1921) 0.05" NA
Feb 17 13° 35° -17° (1903) 58° (1981) 0.05" NA
Feb 18 14° 36° -20° (1936) 62° (1981) 0.06" NA
Feb 19 14° 36° -20° (1979) 65° (1930) 0.06" NA
Feb 20 14° 36° -30° (1929) 60° (1930) 0.06" NA
Feb 21 15° 37° -20° (1963) 65° (1930) 0.06" NA
Feb 22 15° 37° -23° (1936) 62° (1930) 0.06" NA
Feb 23 16° 37° -16° (1989) 63° (1984) 0.06" NA
Feb 24 16° 38° -18° (1993) 64° (1930) 0.06" NA
Feb 25 16° 38° -15° (1967) 63° (1930) 0.06" NA
Feb 26 17° 39° -12° (1994) 70° (2000) 0.06" NA
Feb 27 17° 39° -17° (1994) 61° (2000) 0.06" NA
Feb 28 18° 40° -8° (1901) 64° (1976) 0.07" NA
Feb 29 18° 40° -4° (1912) 58° (2000) 0.07" NA
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