Morristown, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 29° -27° (1982) 63° (1989) 1.37" 10.2"
February 18° 34° -25° (1933) 70° (2000) 1.47" 7.7"
March 28° 47° -11° (2002) 85° (1986) 2.32" 4.8"
April 38° 61° 5° (1982) 93° (1930) 3.35" 0.9"
May 48° 72° 24° (1966) 106° (1934) 4.02" 0"
June 59° 81° 35° (1945) 106° (1934) 4.65" 0"
July 63° 85° 43° (1967) 112° (1936) 3.95" 0"
August 61° 82° 35° (1915) 104° (1988) 4.59" 0"
September 52° 75° 24° (1942) 103° (1939) 3.35" 0"
October 41° 63° 7° (1925) 91° (1922) 2.67" 0.1"
November 30° 48° -10° (1977) 81° (1933) 2.58" 1.7"
December 18° 33° -24° (1983) 67° (2001) 1.98" 11.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 44° 67° 27° (1978) 88° (1992) 0.11" 0"
May 2 44° 67° 28° (1966) 88° (1959) 0.11" 0"
May 3 44° 68° 26° (2005) 91° (1938) 0.12" 0"
May 4 45° 68° 27° (1935) 92° (1952) 0.11" 0"
May 5 45° 68° 29° (1944) 93° (1949) 0.11" 0"
May 6 45° 69° 29° (1989) 95° (1934) 0.12" 0"
May 7 46° 69° 28° (1989) 91° (1896) 0.11" 0"
May 8 46° 69° 30° (1947) 92° (1896) 0.11" 0"
May 9 46° 70° 27° (1966) 96° (1934) 0.12" 0"
May 10 47° 70° 24° (1966) 91° (1922) 0.12" 0"
May 11 47° 70° 28° (1907) 90° (1922) 0.12" 0"
May 12 47° 71° 29° (1981) 88° (1896) 0.12" 0"
May 13 47° 71° 32° (1938) 88° (1991) 0.13" 0"
May 14 48° 71° 33° (1943) 92° (2007) 0.13" 0"
May 15 48° 72° 31° (1926) 90° (1944) 0.12" 0"
May 16 48° 72° 29° (1997) 90° (1992) 0.13" 0"
May 17 49° 72° 32° (1930) 91° (1934) 0.13" 0"
May 18 49° 73° 31° (2002) 94° (1934) 0.14" 0"
May 19 49° 73° 31° (1929) 96° (1934) 0.13" 0"
May 20 50° 73° 31° (1924) 94° (1934) 0.14" 0"
May 21 50° 73° 29° (2002) 93° (1934) 0.15" 0"
May 22 50° 74° 33° (1967) 94° (1925) 0.14" 0"
May 23 51° 74° 30° (1917) 95° (1921) 0.14" 0"
May 24 51° 74° 33° (1925) 93° (2010) 0.15" 0"
May 25 51° 75° 29° (1925) 92° (1939) 0.14" 0"
May 26 52° 75° 32° (1925) 92° (1911) 0.14" 0"
May 27 52° 75° 30° (1992) 92° (1978) 0.14" 0"
May 28 52° 76° 36° (1992) 93° (2006) 0.14" 0"
May 29 53° 76° 33° (1965) 97° (1934) 0.14" 0"
May 30 53° 76° 34° (1984) 96° (1934) 0.16" 0"
May 31 53° 77° 36° (1897) 106° (1934) 0.15" 0"
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