Marengo, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 28° -29° (1979) 62° (1967) 1.48" NA
February 16° 33° -27° (1905) 73° (1932) 1.29" NA
March 26° 45° -16° (1943) 84° (1986) 2.42" NA
April 37° 59° 6° (1982) 94° (1926) 3.71" NA
May 47° 71° 22° (1966) 107° (1934) 4.1" NA
June 57° 81° 29° (1972) 107° (1934) 4.56" NA
July 62° 85° 39° (1972) 109° (1936) 3.86" NA
August 60° 82° 37° (1915) 107° (1918) 4.47" NA
September 51° 75° 25° (1974) 103° (1922) 3.32" NA
October 39° 63° 8° (1925) 90° (1971) 2.61" NA
November 29° 47° -17° (1947) 80° (1933) 2.69" NA
December 17° 33° -26° (1950) 65° (1962) 1.97" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 32° 52° 15° (1964) 84° (1986) 0.11" NA
Apr 2 32° 53° 17° (1987) 81° (1963) 0.11" NA
Apr 3 33° 53° 14° (1954) 80° (1921) 0.11" NA
Apr 4 33° 54° 14° (1936) 82° (1921) 0.11" NA
Apr 5 33° 54° 15° (1995) 81° (1929) 0.11" NA
Apr 6 34° 54° 8° (1979) 84° (1929) 0.11" NA
Apr 7 34° 55° 6° (1982) 84° (1991) 0.12" NA
Apr 8 34° 55° 11° (1972) 80° (1991) 0.12" NA
Apr 9 35° 56° 17° (1996) 75° (1905) 0.12" NA
Apr 10 35° 56° 17° (1909) 92° (1930) 0.12" NA
Apr 11 35° 57° 17° (1989) 87° (1930) 0.12" NA
Apr 12 35° 57° 19° (1939) 83° (1941) 0.12" NA
Apr 13 36° 58° 18° (1939) 80° (1931) 0.12" NA
Apr 14 36° 58° 20° (1907) 81° (1941) 0.13" NA
Apr 15 37° 58° 18° (1928) 84° (2003) 0.13" NA
Apr 16 37° 59° 19° (1904) 86° (2003) 0.13" NA
Apr 17 37° 59° 23° (1907) 88° (1977) 0.13" NA
Apr 18 37° 60° 20° (1983) 88° (1977) 0.13" NA
Apr 19 38° 60° 17° (1983) 87° (1985) 0.13" NA
Apr 20 38° 61° 22° (1962) 86° (1985) 0.13" NA
Apr 21 38° 61° 24° (1904) 88° (1987) 0.13" NA
Apr 22 39° 61° 22° (1986) 87° (1985) 0.13" NA
Apr 23 39° 62° 22° (1910) 91° (1980) 0.13" NA
Apr 24 40° 62° 16° (1910) 85° (1915) 0.13" NA
Apr 25 40° 63° 25° (1919) 86° (1948) 0.13" NA
Apr 26 40° 63° 26° (1907) 87° (1915) 0.13" NA
Apr 27 41° 64° 25° (1946) 89° (1986) 0.13" NA
Apr 28 41° 64° 24° (1950) 87° (1952) 0.13" NA
Apr 29 41° 64° 25° (1977) 88° (1942) 0.13" NA
Apr 30 42° 65° 27° (1931) 94° (1926) 0.13" NA
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