Oneco, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 28° -27° (1985) 61° (2002) 1.37" 9"
February 16° 34° -27° (1996) 65° (1999) 1.58" 6.5"
March 26° 46° -8° (2002) 85° (1986) 2.08" 3.5"
April 37° 60° 9° (1982) 92° (1980) 3.3" 0.8"
May 48° 71° 25° (2005) 95° (1985) 3.99" 0"
June 58° 80° 38° (1993) 100° (1988) 4.61" 0"
July 62° 84° 46° (1979) 101° (1988) 3.94" 0"
August 60° 82° 40° (1986) 101° (1988) 4.29" 0"
September 50° 74° 28° (1984) 96° (1985) 3.66" 0"
October 39° 62° 15° (1988) 90° (1997) 2.88" 0"
November 29° 47° -5° (1977) 77° (2000) 2.66" 1.8"
December 16° 32° -23° (2000) 67° (2001) 1.76" 9.7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 43° 66° 27° (1978) 83° (2001) 0.12" 0"
May 2 43° 66° 29° (1978) 87° (1992) 0.12" 0"
May 3 43° 66° 25° (2005) 81° (2001) 0.12" 0"
May 4 44° 67° 25° (2005) 86° (2001) 0.12" 0"
May 5 44° 67° 31° (2005) 86° (1980) 0.11" 0"
May 6 44° 68° 30° (1989) 88° (1980) 0.12" 0"
May 7 45° 68° 27° (1989) 83° (2000) 0.12" 0"
May 8 45° 68° 30° (1989) 83° (1988) 0.12" 0"
May 9 45° 69° 30° (1983) 89° (1979) 0.11" 0"
May 10 46° 69° 27° (1981) 89° (1979) 0.12" 0"
May 11 46° 69° 31° (1981) 88° (1979) 0.13" 0"
May 12 46° 69° 31° (1981) 88° (1987) 0.12" 0"
May 13 47° 70° 34° (1989) 88° (1991) 0.13" 0"
May 14 47° 70° 38° (1981) 88° (1998) 0.13" 0"
May 15 48° 70° 36° (1997) 89° (2007) 0.12" 0"
May 16 48° 71° 29° (1997) 86° (2001) 0.13" 0"
May 17 48° 71° 31° (1997) 88° (1977) 0.13" 0"
May 18 49° 71° 31° (2002) 90° (1987) 0.14" 0"
May 19 49° 72° 31° (2002) 90° (1996) 0.13" 0"
May 20 49° 72° 30° (2002) 93° (1975) 0.14" 0"
May 21 50° 72° 28° (2002) 90° (1975) 0.14" 0"
May 22 50° 73° 38° (1985) 88° (1977) 0.14" 0"
May 23 50° 73° 38° (2006) 88° (1975) 0.13" 0"
May 24 51° 73° 35° (1992) 93° (1975) 0.14" 0"
May 25 51° 74° 34° (1988) 92° (2010) 0.13" 0"
May 26 51° 74° 36° (1979) 91° (1977) 0.14" 0"
May 27 52° 74° 34° (1992) 95° (1985) 0.13" 0"
May 28 52° 75° 36° (1992) 94° (1978) 0.14" 0"
May 29 52° 75° 34° (1984) 94° (1991) 0.13" 0"
May 30 53° 75° 37° (1996) 90° (2006) 0.14" 0"
May 31 53° 76° 42° (1990) 90° (1988) 0.15" 0"
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