Jacksonville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 35° -24° (1927) 75° (1950) 1.59" 4.5"
February 21° 41° -28° (1934) 80° (1932) 1.76" 4.6"
March 29° 52° -14° (1948) 91° (1907) 2.72" 2.3"
April 40° 65° 10° (1920) 94° (1930) 4.03" 0.3"
May 50° 74° 26° (1966) 103° (1934) 4.81" 0"
June 59° 83° 36° (1993) 107° (1931) 4.58" 0"
July 63° 87° 43° (1930) 114° (1954) 3.95" 0"
August 61° 85° 39° (1986) 112° (1934) 3.42" 0"
September 52° 79° 25° (1942) 103° (1913) 3.53" 0"
October 41° 67° 9° (1925) 95° (1922) 3.01" 0"
November 32° 53° -5° (1929) 84° (1937) 3.62" 0.5"
December 21° 39° -24° (1944) 74° (1998) 2.5" 5.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 46° 73° 28° (1939) 91° (1901) 0.1" 0"
Oct 2 45° 73° 26° (1974) 94° (1922) 0.1" 0"
Oct 3 45° 72° 25° (2003) 95° (1922) 0.1" 0"
Oct 4 45° 72° 27° (1935) 94° (2006) 0.09" 0"
Oct 5 44° 72° 25° (1901) 92° (1922) 0.1" 0"
Oct 6 44° 71° 25° (2004) 92° (1927) 0.1" 0"
Oct 7 44° 71° 23° (1935) 94° (1939) 0.09" 0"
Oct 8 43° 70° 23° (1952) 92° (1939) 0.09" 0"
Oct 9 43° 70° 24° (1987) 91° (1938) 0.09" 0"
Oct 10 43° 70° 23° (1964) 90° (1938) 0.09" 0"
Oct 11 42° 69° 23° (1906) 89° (1938) 0.09" 0"
Oct 12 42° 69° 21° (1987) 88° (1901) 0.09" 0"
Oct 13 42° 68° 19° (1917) 87° (1935) 0.09" 0"
Oct 14 42° 68° 24° (1979) 88° (1947) 0.09" 0"
Oct 15 41° 68° 20° (1937) 90° (1938) 0.09" 0"
Oct 16 41° 67° 28° (1991) 88° (1938) 0.09" 0"
Oct 17 41° 67° 25° (1943) 89° (1964) 0.1" 0"
Oct 18 41° 66° 22° (1948) 86° (1924) 0.09" 0"
Oct 19 40° 66° 20° (1972) 86° (1950) 0.11" 0"
Oct 20 40° 66° 20° (1930) 86° (1963) 0.09" 0"
Oct 21 40° 65° 23° (1917) 88° (2003) 0.1" 0"
Oct 22 40° 65° 21° (1976) 86° (1947) 0.11" 0"
Oct 23 39° 65° 21° (1976) 85° (1939) 0.1" 0"
Oct 24 39° 64° 23° (1935) 84° (1940) 0.1" 0"
Oct 25 39° 64° 23° (1999) 86° (1940) 0.1" 0"
Oct 26 39° 63° 18° (1942) 87° (1927) 0.1" 0"
Oct 27 39° 63° 20° (1925) 87° (1927) 0.1" 0"
Oct 28 38° 62° 18° (1925) 86° (1927) 0.11" 0"
Oct 29 38° 62° 16° (1925) 85° (1937) 0.1" 0"
Oct 30 38° 62° 9° (1925) 90° (1950) 0.11" 0"
Oct 31 37° 61° 15° (1925) 87° (1950) 0.1" 0"
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