Jacksonville, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -9° -31.1° (1927) 23.9° (1950) 1.35" 6.6"
February -7° -33.3° (1934) 26.7° (1932) 1.69" 6.5"
March -2° 11° -25.6° (1948) 32.8° (1907) 3.18" 2.3"
April 18° -12.2° (1920) 34.4° (1930) 3.77" 0.4"
May 23° -3.3° (1966) 39.4° (1934) 4.86" 0"
June 15° 28° 2.2° (1993) 41.7° (1931) 4.36" 0"
July 17° 31° 6.1° (1930) 45.6° (1954) 3.85" 0"
August 16° 29° 3.9° (1986) 44.4° (1934) 3.35" 0"
September 11° 26° -3.9° (1942) 39.4° (1913) 3.46" 0"
October 20° -12.8° (1925) 35° (1922) 2.61" 0"
November -1° 11° -20.6° (1929) 28.9° (1937) 3.45" 1.2"
December -7° -31.1° (1944) 23.3° (1998) 2.54" 5.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 1.1° 15° -8° (1926) 29° (1946) 0.11" NA
Apr 2 1.1° 15° -6° (1961) 29° (1903) 0.11" NA
Apr 3 1.7° 15.6° -8° (1936) 29° (1929) 0.12" NA
Apr 4 1.7° 15.6° -7° (1975) 34° (1929) 0.12" NA
Apr 5 1.7° 15.6° -12° (1920) 31° (1929) 0.12" NA
Apr 6 2.2° 16.1° -7° (1982) 33° (1929) 0.12" NA
Apr 7 2.2° 16.1° -7° (1982) 31° (1929) 0.12" NA
Apr 8 2.2° 16.1° -8.9° (2007) 29° (2001) 0.12" NA
Apr 9 2.2° 16.7° -7° (1997) 31° (1905) 0.12" NA
Apr 10 2.8° 16.7° -8° (1997) 34° (1930) 0.12" NA
Apr 11 2.8° 17.2° -5° (1973) 34° (1930) 0.12" NA
Apr 12 2.8° 17.2° -7° (1939) 32° (1930) 0.12" NA
Apr 13 3.3° 17.2° -6° (1932) 32° (1941) 0.12" NA
Apr 14 3.3° 17.8° -6° (1997) 30° (2006) 0.12" NA
Apr 15 3.3° 17.8° -6° (1943) 32.2° (2006) 0.12" NA
Apr 16 3.9° 17.8° -4° (1962) 31° (2002) 0.12" NA
Apr 17 3.9° 18.3° -4° (1904) 32° (2002) 0.13" NA
Apr 18 3.9° 18.3° -5° (1983) 31° (2004) 0.13" NA
Apr 19 4.4° 18.9° -4° (1983) 33° (2002) 0.13" NA
Apr 20 4.4° 18.9° -3° (1956) 32° (1936) 0.13" NA
Apr 21 18.9° -4° (1950) 31° (1902) 0.13" NA
Apr 22 19.4° -5° (1936) 31° (1925) 0.13" NA
Apr 23 19.4° -4° (1956) 32° (1950) 0.13" NA
Apr 24 5.6° 19.4° -6° (1910) 31° (1925) 0.13" NA
Apr 25 5.6° 20° -6° (1934) 31° (1954) 0.13" NA
Apr 26 5.6° 20° -3° (1919) 32° (1986) 0.14" NA
Apr 27 6.1° 20° -4° (1933) 32° (1956) 0.14" NA
Apr 28 6.1° 20.6° -3° (1928) 32° (1951) 0.14" NA
Apr 29 6.1° 20.6° -2° (1992) 32° (1910) 0.14" NA
Apr 30 6.7° 20.6° -1° (1908) 32° (1942) 0.14" NA
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