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
Jul 1 17.2° 29.4° 9° (1924) 39° (1931) 0.13" NA
Jul 2 17.2° 29.4° 9° (1904) 38° (1925) 0.13" NA
Jul 3 17.8° 29.4° 9° (1917) 38° (1911) 0.13" NA
Jul 4 17.8° 29.4° 9° (1940) 41° (1936) 0.13" NA
Jul 5 17.8° 29.4° 8° (1972) 41° (1936) 0.13" NA
Jul 6 17.8° 29.4° 9° (1972) 41° (1936) 0.13" NA
Jul 7 17.8° 29.4° 11° (1984) 41° (1936) 0.14" NA
Jul 8 17.8° 30° 9° (1908) 41° (1936) 0.14" NA
Jul 9 17.8° 30° 11° (1963) 39° (1936) 0.14" NA
Jul 10 17.8° 30° 11° (1963) 41° (1936) 0.14" NA
Jul 11 18.3° 30° 10° (1898) 42° (1936) 0.14" NA
Jul 12 18.3° 30° 10° (1975) 42° (1936) 0.13" NA
Jul 13 18.3° 30° 9° (1975) 43° (1936) 0.13" NA
Jul 14 18.3° 30° 9° (1975) 43° (1936) 0.13" NA
Jul 15 18.3° 30° 8° (1930) 45° (1936) 0.13" NA
Jul 16 18.3° 30° 11° (1930) 40° (1887) 0.13" NA
Jul 17 18.3° 30° 9° (1911) 41° (1887) 0.13" NA
Jul 18 18.3° 30° 11° (1979) 38° (1930) 0.13" NA
Jul 19 18.3° 30° 8° (1909) 39° (1930) 0.13" NA
Jul 20 18.3° 30° 11° (1971) 39° (1930) 0.13" NA
Jul 21 18.3° 30° 11° (1970) 41° (1901) 0.13" NA
Jul 22 18.3° 30° 9° (1947) 41° (1901) 0.13" NA
Jul 23 18.3° 30° 11° (1947) 41° (1934) 0.13" NA
Jul 24 18.3° 30° 11° (1906) 41° (1901) 0.13" NA
Jul 25 18.3° 30° 11° (1911) 40° (1940) 0.13" NA
Jul 26 18.3° 30° 8° (1911) 41° (1936) 0.12" NA
Jul 27 18.3° 30° 8° (1962) 42° (1930) 0.12" NA
Jul 28 18.3° 30° 12° (1994) 39° (1983) 0.12" NA
Jul 29 18.3° 30° 10° (1971) 40° (1887) 0.12" NA
Jul 30 18.3° 29.4° 9° (1971) 40° (1885) 0.12" NA
Jul 31 18.3° 29.4° 8° (1971) 39° (1988) 0.12" NA
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