Altona, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 29° -23° (1985) 67° (1909) 1.52" 7.9"
February 19° 35° -28° (1905) 70° (1932) 1.54" 6.7"
March 29° 47° -12° (1962) 86° (1910) 2.79" 4.8"
April 39° 61° 9° (1920) 93° (1930) 3.93" 1.8"
May 51° 72° 22° (2005) 105° (1934) 3.94" 0"
June 60° 82° 36° (1913) 105° (1934) 4.39" 0"
July 64° 85° 44° (1947) 111° (1936) 3.98" 0"
August 62° 83° 38° (1915) 105° (1936) 4.32" 0"
September 53° 76° 25° (1942) 101° (1953) 3.57" 0"
October 42° 64° 9° (1925) 94° (1909) 2.73" 0.3"
November 30° 48° -7° (1977) 83° (1950) 2.91" 2.1"
December 18° 34° -26° (1924) 69° (1998) 2.27" 5.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 24° 40° 3° (1976) 64° (1962) 0.09" NA
Dec 2 23° 39° -3° (1942) 65° (1962) 0.09" NA
Dec 3 23° 39° -9° (1942) 67° (1951) 0.09" NA
Dec 4 22° 38° -4° (1991) 68° (1970) 0.09" NA
Dec 5 22° 38° -5° (2006) 69° (1998) 0.09" NA
Dec 6 21° 38° -6° (1977) 68° (2001) 0.08" NA
Dec 7 21° 37° -7° (1976) 65° (1916) 0.08" NA
Dec 8 21° 37° -7° (1902) 65° (1946) 0.08" NA
Dec 9 20° 36° -16° (1958) 65° (1918) 0.08" NA
Dec 10 20° 36° -15° (1919) 60° (1946) 0.08" NA
Dec 11 19° 36° -9° (1917) 64° (1949) 0.08" NA
Dec 12 19° 35° -9° (1932) 58° (1948) 0.08" NA
Dec 13 19° 35° -18° (1903) 63° (1991) 0.08" NA
Dec 14 18° 34° -14° (1901) 62° (1975) 0.07" NA
Dec 15 18° 34° -17° (1989) 62° (1975) 0.07" NA
Dec 16 18° 34° -18° (1951) 60° (1939) 0.07" NA
Dec 17 17° 33° -12° (1945) 58° (1939) 0.07" NA
Dec 18 17° 33° -16° (1985) 62° (1939) 0.07" NA
Dec 19 17° 33° -19° (1983) 56° (1918) 0.07" NA
Dec 20 16° 33° -19° (1983) 59° (1988) 0.07" NA
Dec 21 16° 32° -20° (1989) 60° (1967) 0.07" NA
Dec 22 16° 32° -20° (1989) 58° (1933) 0.07" NA
Dec 23 16° 32° -22° (1989) 63° (1933) 0.07" NA
Dec 24 15° 31° -22° (1989) 61° (1955) 0.06" NA
Dec 25 15° 31° -20° (1983) 60° (1936) 0.06" NA
Dec 26 15° 31° -15° (1962) 58° (1982) 0.06" NA
Dec 27 14° 31° -13° (1933) 62° (1946) 0.06" NA
Dec 28 14° 30° -26° (1924) 64° (1946) 0.06" NA
Dec 29 14° 30° -15° (1917) 66° (1984) 0.06" NA
Dec 30 14° 30° -14° (1909) 60° (1929) 0.06" NA
Dec 31 14° 30° -14° (1976) 60° (1965) 0.06" NA
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