Allerton, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 16° 32° -25° (1999) 70° (1909) 1.9" 8.1"
February 21° 38° -25° (1905) 72° (2000) 2.01" 7"
March 30° 49° -5° (1906) 85° (1910) 3.21" 4.2"
April 40° 62° 16° (1982) 91° (1986) 3.65" 0.8"
May 51° 74° 26° (1903) 97° (1934) 4.8" 0"
June 60° 83° 37° (1945) 103° (1988) 4.21" 0"
July 64° 85° 41° (1904) 109° (1954) 4.67" 0"
August 62° 83° 39° (1915) 102° (1988) 4.37" 0"
September 54° 78° 29° (1942) 101° (1954) 3.22" 0"
October 43° 65° 13° (1925) 93° (1954) 2.81" 0.1"
November 33° 50° -5° (1950) 80° (1950) 3.45" 2"
December 22° 37° -20° (1983) 71° (1998) 2.76" 5.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 27° 42° 10° (1985) 68° (1970) 0.11" NA
Dec 2 27° 42° 0° (1942) 69° (1982) 0.11" NA
Dec 3 26° 41° -8° (1929) 68° (1970) 0.11" NA
Dec 4 26° 41° 1° (1991) 71° (1998) 0.1" NA
Dec 5 25° 40° 10° (1928) 68° (1956) 0.1" NA
Dec 6 25° 40° -2° (1977) 69° (1998) 0.1" NA
Dec 7 25° 40° 0° (1977) 66° (1916) 0.1" NA
Dec 8 24° 39° -6° (1909) 65° (1946) 0.1" NA
Dec 9 24° 39° -7° (1909) 65° (1918) 0.1" NA
Dec 10 24° 38° -10° (1917) 64° (1971) 0.1" NA
Dec 11 23° 38° -12° (1917) 64° (1949) 0.1" NA
Dec 12 23° 38° -7° (1962) 62° (1929) 0.09" NA
Dec 13 23° 37° -7° (1903) 64° (1975) 0.09" NA
Dec 14 22° 37° -4° (1914) 63° (1948) 0.09" NA
Dec 15 22° 37° -8° (1914) 70° (1948) 0.09" NA
Dec 16 22° 36° -11° (1951) 64° (1984) 0.09" NA
Dec 17 21° 36° -10° (1914) 62° (1908) 0.09" NA
Dec 18 21° 36° -11° (1983) 60° (1962) 0.09" NA
Dec 19 21° 36° -13° (1983) 59° (1957) 0.08" NA
Dec 20 20° 35° -18° (1989) 64° (1988) 0.08" NA
Dec 21 20° 35° -16° (1989) 63° (1967) 0.08" NA
Dec 22 20° 35° -16° (1989) 57° (1931) 0.08" NA
Dec 23 20° 35° -18° (1989) 64° (1933) 0.08" NA
Dec 24 19° 34° -20° (1983) 59° (1982) 0.08" NA
Dec 25 19° 34° -15° (1983) 62° (1982) 0.08" NA
Dec 26 19° 34° -13° (1914) 59° (1942) 0.08" NA
Dec 27 19° 34° -9° (1935) 62° (1907) 0.08" NA
Dec 28 18° 33° -20° (1924) 68° (1984) 0.07" NA
Dec 29 18° 33° -9° (1983) 62° (1984) 0.07" NA
Dec 30 18° 33° -13° (1909) 63° (1965) 0.07" NA
Dec 31 18° 33° -10° (1967) 64° (1951) 0.07" NA
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