Alta, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -10° -1° -32.8° (1884) 21.7° (1909) 1.5" 8.2"
February -7° -32.2° (1905) 23.3° (1932) 1.67" 5.6"
March -1° -23.9° (1943) 31.1° (1907) 2.83" 3.2"
April 17° -10.6° (1982) 33.3° (1986) 3.56" 1"
May 11° 23° -3.9° (1966) 40° (1934) 4.17" 0"
June 16° 28° 3.9° (1993) 40.6° (1988) 3.84" 0"
July 18° 30° 7.8° (1911) 45° (1936) 4.02" 0"
August 17° 29° 5° (1986) 41.1° (1936) 3.16" 0"
September 12° 25° -4.4° (1942) 40° (1899) 3.12" 0"
October 18° -13.9° (1925) 33.9° (2006) 2.77" 0"
November -1° -18.9° (1977) 27.2° (1950) 2.99" 2.1"
December -7° -31.1° (1924) 21.7° (1982) 2.4" 7.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Aug 1 18.3° 29.4° 11° (1990) 38° (1988) 0.11" NA
Aug 2 18.3° 29.4° 11° (1920) 38° (1947) 0.11" NA
Aug 3 18.3° 29.4° 9° (1912) 40° (1887) 0.11" NA
Aug 4 18.3° 29.4° 7° (1912) 39° (1930) 0.11" NA
Aug 5 17.8° 29.4° 11° (1994) 40° (1918) 0.11" NA
Aug 6 17.8° 29.4° 10° (1997) 38° (1947) 0.11" NA
Aug 7 17.8° 29.4° 10° (1989) 37° (1918) 0.1" NA
Aug 8 17.8° 29.4° 9° (1989) 38° (1913) 0.1" NA
Aug 9 17.8° 29.4° 8° (1922) 40° (1934) 0.1" NA
Aug 10 17.8° 29.4° 9° (1972) 39° (1887) 0.1" NA
Aug 11 17.8° 28.9° 9° (2004) 38° (1941) 0.1" NA
Aug 12 17.8° 28.9° 8° (1979) 37° (1918) 0.1" NA
Aug 13 17.2° 28.9° 9° (2004) 40° (1936) 0.1" NA
Aug 14 17.2° 28.9° 8° (2004) 37° (1936) 0.1" NA
Aug 15 17.2° 28.9° 7° (1979) 39° (1988) 0.1" NA
Aug 16 17.2° 28.9° 11° (2004) 39° (1988) 0.1" NA
Aug 17 17.2° 28.9° 11° (1992) 39° (1988) 0.1" NA
Aug 18 17.2° 28.9° 7° (1963) 41° (1936) 0.1" NA
Aug 19 16.7° 28.3° 11° (1950) 38° (1983) 0.1" NA
Aug 20 16.7° 28.3° 6° (1950) 39° (1983) 0.1" NA
Aug 21 16.7° 28.3° 7° (1950) 37° (1983) 0.1" NA
Aug 22 16.7° 28.3° 8° (1923) 39° (1936) 0.1" NA
Aug 23 16.1° 28.3° 10° (1945) 38° (1947) 0.1" NA
Aug 24 16.1° 28.3° 6° (1920) 39° (1936) 0.1" NA
Aug 25 16.1° 27.8° 8° (1917) 37° (1936) 0.1" NA
Aug 26 16.1° 27.8° 5° (1910) 37° (2003) 0.1" NA
Aug 27 15.6° 27.8° 6° (1910) 37° (1899) 0.1" NA
Aug 28 15.6° 27.8° 5° (1986) 36° (1899) 0.1" NA
Aug 29 15.6° 27.8° 6° (1986) 36° (1984) 0.1" NA
Aug 30 15.6° 27.2° 7° (1915) 37° (1945) 0.1" NA
Aug 31 15° 27.2° 5° (1915) 36° (2000) 0.1" NA
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