Jacksonville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 15° 34° -24° (1927) 75° (1950) 1.35" 6.6"
February 19° 40° -28° (1934) 80° (1932) 1.69" 6.5"
March 29° 52° -14° (1948) 91° (1907) 3.18" 2.3"
April 39° 64° 10° (1920) 94° (1930) 3.77" 0.4"
May 49° 74° 26° (1966) 103° (1934) 4.86" 0"
June 59° 83° 36° (1993) 107° (1931) 4.36" 0"
July 63° 87° 43° (1930) 114° (1954) 3.85" 0"
August 60° 85° 39° (1986) 112° (1934) 3.35" 0"
September 52° 79° 25° (1942) 103° (1913) 3.46" 0"
October 41° 68° 9° (1925) 95° (1922) 2.61" 0"
November 31° 52° -5° (1929) 84° (1937) 3.45" 1.2"
December 20° 39° -24° (1944) 74° (1998) 2.54" 5.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 16° 36° -13° (1996) 71° (1989) 0.04" NA
Feb 2 16° 36° -17° (1951) 62° (1911) 0.04" NA
Feb 3 16° 37° -20° (1996) 66° (1931) 0.05" NA
Feb 4 17° 37° -21° (1996) 68° (1992) 0.05" NA
Feb 5 17° 37° -16° (1996) 69° (1938) 0.05" NA
Feb 6 17° 37° -13° (1979) 65° (1904) 0.05" NA
Feb 7 17° 38° -14° (1905) 65° (1925) 0.05" NA
Feb 8 17° 38° -13° (1933) 65° (1925) 0.05" NA
Feb 9 18° 38° -14° (1933) 70° (1943) 0.05" NA
Feb 10 18° 39° -15° (1979) 80° (1932) 0.05" NA
Feb 11 18° 39° -15° (1982) 71° (1932) 0.05" NA
Feb 12 18° 39° -13° (1944) 75° (1938) 0.06" NA
Feb 13 19° 40° -27° (1905) 71° (1938) 0.06" NA
Feb 14 19° 40° -15° (1905) 74° (1954) 0.06" NA
Feb 15 19° 40° -18° (1905) 72° (1954) 0.06" NA
Feb 16 19° 41° -8° (1943) 69° (1911) 0.06" NA
Feb 17 20° 41° -19° (1903) 67° (1911) 0.06" NA
Feb 18 20° 41° -12° (1910) 65° (1913) 0.06" NA
Feb 19 20° 42° -12° (1903) 71° (1930) 0.07" NA
Feb 20 21° 42° -8° (1978) 71° (1930) 0.07" NA
Feb 21 21° 42° -4° (1963) 73° (1930) 0.07" NA
Feb 22 21° 43° -4° (1963) 73° (1922) 0.07" NA
Feb 23 22° 43° -3° (1910) 71° (2000) 0.07" NA
Feb 24 22° 44° -5° (1989) 80° (1930) 0.07" NA
Feb 25 22° 44° -5° (1914) 74° (1930) 0.08" NA
Feb 26 22° 44° -17° (1963) 74° (2000) 0.08" NA
Feb 27 23° 45° -28° (1934) 74° (1996) 0.08" NA
Feb 28 23° 45° 1° (1962) 74° (1976) 0.08" NA
Feb 29 23° 45° 3° (1960) 70° (1972) 0.08" NA
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