Alta, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -8° -32.8° (1884) 21.7° (1909) 1.78" 6.9"
February -6° -32.2° (1905) 23.3° (1932) 1.87" 6.2"
March -1° 10° -23.9° (1943) 31.1° (1907) 2.8" 2.7"
April 17° -10.6° (1982) 33.3° (1986) 3.63" 0.6"
May 11° 23° -3.9° (1966) 40° (1934) 4.33" 0"
June 16° 28° 3.9° (1993) 40.6° (1988) 3.53" 0"
July 19° 30° 7.8° (1911) 45° (1936) 3.85" 0"
August 18° 29° 5° (1986) 41.1° (1936) 3.24" 0"
September 13° 25° -4.4° (1942) 40° (1899) 3.15" 0"
October 18° -13.9° (1925) 33.9° (2006) 2.84" 0"
November 10° -18.9° (1977) 27.2° (1950) 3.13" 1.1"
December -6° -31.1° (1924) 21.7° (1982) 2.42" 7.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 18° 29° -18° (1990) 38° (1988) 0.11" 0"
Aug 2 18° 29° -18° (1920) 38° (1947) 0.12" 0"
Aug 3 18° 29° -18° (1912) 40° (1887) 0.1" 0"
Aug 4 18° 29° -18° (1912) 39° (1930) 0.11" 0"
Aug 5 18° 29° -18° (1994) 40° (1918) 0.1" 0"
Aug 6 18° 29° -18° (1997) 38° (1947) 0.1" 0"
Aug 7 18° 29° -18° (1989) 37° (1918) 0.1" 0"
Aug 8 18° 29° -18° (1989) 38° (1913) 0.1" 0"
Aug 9 18° 29° -18° (1922) 40° (1934) 0.1" 0"
Aug 10 18° 29° -18° (1972) 39° (1887) 0.11" 0"
Aug 11 18° 29° -18° (2004) 38° (1941) 0.1" 0"
Aug 12 18° 29° -18° (1979) 37° (1918) 0.1" 0"
Aug 13 18° 29° -18° (2004) 40° (1936) 0.1" 0"
Aug 14 18° 29° -18° (2004) 37° (1936) 0.11" 0"
Aug 15 18° 29° -18° (1979) 39° (1988) 0.1" 0"
Aug 16 18° 29° -18° (2004) 39° (1988) 0.1" 0"
Aug 17 18° 29° -18° (1992) 39° (1988) 0.1" 0"
Aug 18 18° 29° -18° (1963) 41° (1936) 0.11" 0"
Aug 19 18° 29° -18° (1950) 38° (1983) 0.1" 0"
Aug 20 18° 29° -18° (1950) 39° (1983) 0.1" 0"
Aug 21 18° 29° -18° (1950) 37° (1983) 0.11" 0"
Aug 22 17° 29° -18° (1923) 39° (1936) 0.1" 0"
Aug 23 17° 29° -18° (1945) 38° (1947) 0.11" 0"
Aug 24 17° 29° -18° (1920) 39° (1936) 0.1" 0"
Aug 25 17° 28° -18° (1917) 37° (1936) 0.11" 0"
Aug 26 17° 28° -18° (1910) 37° (2003) 0.11" 0"
Aug 27 17° 28° -18° (1910) 37° (1899) 0.1" 0"
Aug 28 17° 28° -18° (1986) 36° (1899) 0.11" 0"
Aug 29 17° 28° -18° (1986) 36° (1984) 0.1" 0"
Aug 30 17° 28° -18° (1915) 37° (1945) 0.11" 0"
Aug 31 16° 28° -18° (1915) 36° (2000) 0.11" 0"
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