Bonus, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 29° -29° (1979) 62° (1967) 1.28" 8"
February 16° 34° -27° (1905) 73° (1932) 1.43" 7.8"
March 26° 45° -16° (1943) 84° (1986) 2.08" 3.7"
April 37° 59° 6° (1982) 94° (1926) 3.43" 0.9"
May 47° 70° 22° (1966) 107° (1934) 4.05" 0.1"
June 57° 80° 29° (1972) 107° (1934) 4.32" 0"
July 61° 84° 39° (1972) 109° (1936) 3.82" 0"
August 60° 82° 37° (1915) 107° (1918) 4.68" 0"
September 51° 75° 25° (1974) 103° (1922) 3.03" 0"
October 39° 62° 8° (1925) 90° (1971) 2.83" 0.1"
November 29° 47° -17° (1947) 80° (1933) 2.59" 1.7"
December 16° 33° -26° (1950) 65° (1962) 2.03" 8.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 42° 65° 25° (1963) 89° (1952) 0.12" 0"
May 2 43° 66° 26° (1966) 90° (1901) 0.11" 0"
May 3 43° 66° 27° (1971) 89° (1928) 0.12" 0"
May 4 43° 66° 26° (1907) 92° (1959) 0.12" 0"
May 5 44° 67° 29° (1944) 93° (1949) 0.12" 0"
May 6 44° 67° 28° (1954) 91° (1934) 0.13" 0"
May 7 44° 67° 26° (1989) 89° (1926) 0.12" 0"
May 8 45° 68° 26° (1947) 89° (1963) 0.13" 0"
May 9 45° 68° 26° (1966) 95° (1934) 0.12" 0"
May 10 45° 68° 22° (1966) 91° (1922) 0.13" 0"
May 11 45° 69° 26° (1907) 89° (1922) 0.13" 0"
May 12 46° 69° 28° (1938) 89° (1987) 0.13" 0.1"
May 13 46° 69° 28° (1938) 88° (1991) 0.14" 0"
May 14 46° 70° 30° (1920) 90° (1932) 0.14" 0"
May 15 47° 70° 33° (1904) 90° (2007) 0.13" 0"
May 16 47° 70° 32° (1997) 91° (1962) 0.13" 0"
May 17 47° 71° 31° (1973) 91° (1934) 0.14" 0"
May 18 48° 71° 31° (1925) 94° (1934) 0.13" 0"
May 19 48° 71° 31° (1929) 96° (1934) 0.14" 0"
May 20 48° 72° 32° (1907) 95° (1934) 0.14" 0"
May 21 48° 72° 33° (1907) 93° (1934) 0.14" 0"
May 22 49° 72° 33° (1971) 93° (1925) 0.13" 0"
May 23 49° 73° 27° (1963) 91° (1921) 0.14" 0"
May 24 49° 73° 33° (1947) 92° (1921) 0.13" 0"
May 25 50° 73° 29° (1925) 92° (2010) 0.14" 0"
May 26 50° 74° 31° (1961) 96° (1967) 0.13" 0"
May 27 50° 74° 31° (1992) 94° (1985) 0.13" 0"
May 28 51° 74° 32° (1949) 92° (1978) 0.13" 0"
May 29 51° 75° 32° (1965) 93° (1991) 0.13" 0"
May 30 51° 75° 35° (1996) 94° (1934) 0.14" 0"
May 31 52° 75° 35° (1930) 107° (1934) 0.14" 0"
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