Cottagegrove, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 23° 42° -22° (1977) 78° (1943) 3.42" 1.3"
February 27° 47° -23° (1951) 80° (1962) 3.55" 1.5"
March 35° 57° -8° (1960) 94° (1929) 4.67" 0.6"
April 45° 69° 22° (1982) 96° (1901) 4.43" 0"
May 55° 77° 29° (1963) 100° (1911) 5.07" 0"
June 64° 85° 40° (1945) 106° (1913) 4.46" 0"
July 67° 89° 45° (1997) 113° (1936) 3.75" 0"
August 65° 88° 43° (1986) 111° (1930) 3" 0"
September 56° 82° 29° (1942) 109° (1925) 3.05" 0"
October 45° 71° 18° (1981) 98° (1953) 3.75" 0"
November 36° 58° -3° (1929) 87° (1909) 4.5" 0.1"
December 27° 45° -11° (1917) 78° (1982) 3.94" 0.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 31° 50° 11° (1964) 70° (1922) 0.14" 0"
Dec 2 31° 50° 8° (1929) 78° (1982) 0.14" 0"
Dec 3 30° 49° -2° (1929) 74° (1982) 0.14" 0.1"
Dec 4 30° 49° 11° (1929) 73° (1933) 0.14" 0"
Dec 5 30° 48° 12° (1903) 74° (2001) 0.13" 0"
Dec 6 29° 48° 3° (2002) 73° (2001) 0.14" 0"
Dec 7 29° 47° 7° (1977) 74° (1916) 0.14" 0"
Dec 8 29° 47° 3° (1917) 72° (1966) 0.14" 0"
Dec 9 28° 47° -8° (1917) 68° (1952) 0.14" 0"
Dec 10 28° 46° -9° (1917) 72° (1918) 0.14" 0"
Dec 11 28° 46° -3° (1917) 75° (1931) 0.14" 0.1"
Dec 12 27° 46° -11° (1917) 69° (1929) 0.13" 0"
Dec 13 27° 45° -6° (1962) 70° (1927) 0.13" 0"
Dec 14 27° 45° -3° (1914) 70° (1927) 0.12" 0"
Dec 15 26° 45° -8° (1901) 72° (1984) 0.12" 0"
Dec 16 26° 44° -3° (1901) 67° (1924) 0.12" 0.1"
Dec 17 26° 44° 3° (1914) 70° (1908) 0.12" 0"
Dec 18 26° 44° -9° (1901) 68° (1976) 0.11" 0"
Dec 19 25° 44° -5° (1901) 65° (1976) 0.1" 0"
Dec 20 25° 43° -9° (1901) 69° (1949) 0.12" 0"
Dec 21 25° 43° -3° (1901) 72° (1949) 0.11" 0"
Dec 22 25° 43° -3° (1960) 68° (1933) 0.12" 0"
Dec 23 25° 43° -7° (1960) 71° (1931) 0.12" 0"
Dec 24 24° 43° -9° (1983) 67° (1964) 0.13" 0.1"
Dec 25 24° 42° -10° (1983) 68° (1922) 0.13" 0"
Dec 26 24° 42° -4° (1924) 73° (1942) 0.12" 0"
Dec 27 24° 42° 0° (1935) 69° (1923) 0.13" 0"
Dec 28 24° 42° -10° (1924) 74° (2008) 0.12" 0"
Dec 29 24° 42° 0° (1909) 70° (1984) 0.12" 0.1"
Dec 30 24° 42° -8° (1983) 71° (1923) 0.12" 0"
Dec 31 23° 42° -6° (1976) 76° (1951) 0.12" 0"
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