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
Jan 1 30° -21° (1977) 53° (2007) 0.05" NA
Jan 2 29° -26° (1979) 52° (1950) 0.05" NA
Jan 3 29° -21° (1979) 57° (2000) 0.05" NA
Jan 4 29° -24° (1919) 56° (1998) 0.05" NA
Jan 5 29° -28° (1999) 60° (1997) 0.05" NA
Jan 6 29° -26° (1910) 53° (1946) 0.05" NA
Jan 7 29° -31° (1910) 49° (1949) 0.05" NA
Jan 8 29° -24° (1979) 55° (1965) 0.05" NA
Jan 9 29° -22° (1910) 57° (1939) 0.05" NA
Jan 10 29° -25° (1982) 55° (1939) 0.05" NA
Jan 11 28° -29° (1979) 52° (1980) 0.05" NA
Jan 12 28° -28° (1974) 53° (1960) 0.05" NA
Jan 13 28° -25° (1912) 55° (1960) 0.05" NA
Jan 14 28° -23° (1957) 58° (1928) 0.05" NA
Jan 15 28° -26° (1979) 59° (1949) 0.04" NA
Jan 16 28° -26° (1994) 54° (1933) 0.04" NA
Jan 17 28° -27° (1982) 55° (1990) 0.04" NA
Jan 18 28° -27° (1994) 55° (1996) 0.04" NA
Jan 19 29° -20° (1984) 51° (1981) 0.04" NA
Jan 20 29° -26° (1985) 59° (1906) 0.04" NA
Jan 21 29° -26° (1994) 57° (1957) 0.04" NA
Jan 22 29° -23° (1936) 55° (1964) 0.04" NA
Jan 23 29° -24° (1936) 60° (1909) 0.04" NA
Jan 24 29° -19° (1936) 60° (1967) 0.04" NA
Jan 25 29° -23° (1936) 59° (1967) 0.04" NA
Jan 26 29° -24° (1982) 59° (1944) 0.04" NA
Jan 27 29° -23° (1988) 61° (1944) 0.05" NA
Jan 28 30° -26° (1915) 61° (2002) 0.05" NA
Jan 29 30° -22° (1966) 53° (1914) 0.05" NA
Jan 30 30° -26° (1951) 52° (1988) 0.05" NA
Jan 31 30° -26° (1996) 51° (1988) 0.05" NA
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