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
Mar 1 -5° 7.8° -21° (1960) 24° (1972) 0.08" NA
Mar 2 -4.4° 7.8° -18° (1913) 24° (1992) 0.09" NA
Mar 3 -4.4° 8.3° -18° (1943) 26° (1946) 0.09" NA
Mar 4 -4.4° 8.3° -19° (1978) 26° (1961) 0.09" NA
Mar 5 -3.9° 8.3° -23° (1960) 27° (1956) 0.09" NA
Mar 6 -3.9° 8.9° -25° (1960) 29° (1956) 0.09" NA
Mar 7 -3.3° 8.9° -22° (1943) 27° (1956) 0.09" NA
Mar 8 -3.3° 9.4° -25° (1943) 27° (2000) 0.09" NA
Mar 9 -3.3° 9.4° -18° (1996) 27° (2000) 0.1" NA
Mar 10 -2.8° 10° -18° (1934) 28° (1955) 0.1" NA
Mar 11 -2.8° 10° -15° (1948) 27° (1955) 0.1" NA
Mar 12 -2.8° 10° -26° (1948) 28° (1972) 0.1" NA
Mar 13 -2.2° 10.6° -17° (1926) 31° (1918) 0.1" NA
Mar 14 -2.2° 10.6° -14° (1993) 27° (1990) 0.1" NA
Mar 15 -2.2° 11.1° -14° (1993) 26° (1935) 0.1" NA
Mar 16 -1.7° 11.1° -12° (1951) 30° (1945) 0.11" NA
Mar 17 -1.7° 11.7° -21° (1906) 27° (1945) 0.11" NA
Mar 18 -1.7° 11.7° -17° (1906) 26° (1918) 0.11" NA
Mar 19 -1.1° 11.7° -17° (1923) 27° (1921) 0.11" NA
Mar 20 -1.1° 12.2° -16° (1906) 29° (1935) 0.11" NA
Mar 21 -1.1° 12.2° -16° (1906) 33° (1907) 0.11" NA
Mar 22 -0.6° 12.8° -12° (1906) 30° (1907) 0.11" NA
Mar 23 -0.6° 12.8° -13° (1960) 31° (1910) 0.11" NA
Mar 24 -0.6° 12.8° -14° (1974) 31° (1929) 0.11" NA
Mar 25 13.3° -15° (1974) 28° (1907) 0.11" NA
Mar 26 13.3° -16° (1955) 28° (1950) 0.11" NA
Mar 27 13.9° -10° (1955) 30° (1945) 0.11" NA
Mar 28 0.6° 13.9° -16° (1934) 30° (1910) 0.11" NA
Mar 29 0.6° 14.4° -8° (1915) 31° (1985) 0.11" NA
Mar 30 0.6° 14.4° -8° (1964) 31° (1986) 0.11" NA
Mar 31 1.1° 14.4° -11° (1923) 29° (1986) 0.12" NA
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