Alta, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 31° -27° (1884) 71° (1909) 1.5" 8.2"
February 20° 37° -26° (1905) 74° (1932) 1.67" 5.6"
March 30° 49° -11° (1943) 87° (1907) 2.83" 3.2"
April 40° 62° 14° (1982) 92° (1986) 3.56" 1"
May 51° 73° 25° (1966) 104° (1934) 4.17" 0"
June 60° 82° 39° (1993) 105° (1988) 3.84" 0"
July 65° 86° 46° (1911) 113° (1936) 4.02" 0"
August 63° 84° 41° (1986) 106° (1936) 3.16" 0"
September 54° 77° 24° (1942) 104° (1899) 3.12" 0"
October 42° 64° 7° (1925) 93° (2006) 2.77" 0"
November 31° 49° -2° (1977) 81° (1950) 2.99" 2.1"
December 20° 35° -24° (1924) 71° (1982) 2.4" 7.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 25° 41° -4° (1893) 65° (1970) 0.09" NA
Dec 2 25° 41° -6° (1886) 71° (1982) 0.09" NA
Dec 3 25° 40° -4° (1929) 71° (1970) 0.09" NA
Dec 4 24° 40° -6° (1893) 69° (1998) 0.09" NA
Dec 5 24° 39° 0° (2005) 67° (2001) 0.09" NA
Dec 6 23° 39° -5° (1977) 66° (1980) 0.09" NA
Dec 7 23° 38° -9° (1977) 67° (1916) 0.09" NA
Dec 8 23° 38° -4° (2006) 69° (1991) 0.09" NA
Dec 9 22° 38° -10° (1958) 67° (1918) 0.09" NA
Dec 10 22° 37° -10° (1977) 64° (1889) 0.09" NA
Dec 11 22° 37° -11° (1917) 64° (1949) 0.08" NA
Dec 12 21° 36° -10° (1962) 62° (1991) 0.08" NA
Dec 13 21° 36° -8° (1958) 63° (1975) 0.08" NA
Dec 14 20° 36° -7° (1989) 66° (1975) 0.08" NA
Dec 15 20° 35° -14° (1989) 63° (1971) 0.08" NA
Dec 16 20° 35° -14° (1951) 62° (1984) 0.08" NA
Dec 17 20° 35° -8° (1945) 59° (1895) 0.08" NA
Dec 18 19° 34° -12° (1985) 62° (1939) 0.08" NA
Dec 19 19° 34° -15° (1983) 61° (1988) 0.07" NA
Dec 20 19° 34° -12° (1989) 62° (1949) 0.07" NA
Dec 21 18° 34° -18° (1989) 60° (1967) 0.07" NA
Dec 22 18° 33° -23° (1989) 58° (1933) 0.07" NA
Dec 23 18° 33° -22° (1989) 65° (1933) 0.07" NA
Dec 24 17° 33° -18° (1983) 65° (1889) 0.07" NA
Dec 25 17° 33° -14° (1983) 62° (1936) 0.07" NA
Dec 26 17° 32° -19° (1914) 59° (1942) 0.07" NA
Dec 27 17° 32° -18° (1924) 64° (1946) 0.06" NA
Dec 28 16° 32° -24° (1924) 70° (1984) 0.06" NA
Dec 29 16° 32° -13° (1917) 65° (1984) 0.06" NA
Dec 30 16° 32° -12° (1909) 64° (2002) 0.06" NA
Dec 31 16° 31° -14° (1967) 60° (1896) 0.06" NA
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