Lone Tree, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 30° -25° (1985) 70° (1989) 1.35" NA
February 19° 37° -18° (1979) 71° (1976) 1.48" NA
March 29° 49° -7° (1978) 85° (1986) 2.59" NA
April 39° 63° 9° (1982) 90° (1987) 3.66" NA
May 49° 74° 25° (1966) 93° (1975) 3.96" NA
June 58° 83° 35° (1972) 100° (1988) 4.79" NA
July 62° 86° 44° (1971) 103° (1983) 3.8" NA
August 60° 84° 40° (1986) 104° (1988) 4" NA
September 52° 78° 26° (1974) 98° (1971) 3.49" NA
October 41° 65° 15° (1988) 90° (1971) 2.86" NA
November 31° 49° -4° (1977) 81° (1968) 2.7" NA
December 19° 36° -24° (1989) 70° (1970) 2.12" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 24° 42° 6° (1989) 65° (1972) 0.06" NA
Mar 2 24° 43° 6° (1989) 72° (1974) 0.07" NA
Mar 3 24° 43° 10° (1975) 77° (1974) 0.07" NA
Mar 4 25° 43° -3° (1978) 69° (1983) 0.07" NA
Mar 5 25° 44° -7° (1978) 72° (1983) 0.07" NA
Mar 6 26° 44° 8° (1982) 68° (1974) 0.07" NA
Mar 7 26° 45° 7° (1986) 78° (1987) 0.07" NA
Mar 8 26° 45° 5° (1982) 78° (1987) 0.07" NA
Mar 9 27° 46° 6° (1982) 70° (1977) 0.07" NA
Mar 10 27° 46° 6° (1984) 65° (1967) 0.07" NA
Mar 11 27° 47° -1° (1984) 78° (1972) 0.08" NA
Mar 12 28° 47° 8° (1969) 80° (1990) 0.08" NA
Mar 13 28° 48° 11° (1975) 75° (1990) 0.08" NA
Mar 14 28° 48° 14° (1969) 73° (1973) 0.08" NA
Mar 15 29° 49° 8° (1979) 69° (1973) 0.08" NA
Mar 16 29° 49° 12° (1970) 64° (1968) 0.08" NA
Mar 17 29° 49° 14° (1967) 74° (1966) 0.08" NA
Mar 18 30° 50° 10° (1967) 69° (1976) 0.09" NA
Mar 19 30° 50° 9° (1965) 74° (1969) 0.09" NA
Mar 20 31° 51° 7° (1965) 71° (1972) 0.09" NA
Mar 21 31° 51° 11° (1986) 73° (1966) 0.09" NA
Mar 22 31° 52° 17° (1983) 70° (1975) 0.09" NA
Mar 23 31° 52° 10° (1983) 75° (1987) 0.09" NA
Mar 24 32° 53° 4° (1974) 70° (1988) 0.09" NA
Mar 25 32° 53° 14° (1974) 77° (1967) 0.1" NA
Mar 26 32° 54° 17° (1964) 76° (1968) 0.1" NA
Mar 27 33° 54° 2° (1965) 76° (1989) 0.1" NA
Mar 28 33° 55° 13° (1970) 80° (1968) 0.1" NA
Mar 29 33° 55° 12° (1970) 85° (1986) 0.1" NA
Mar 30 34° 55° 11° (1969) 82° (1986) 0.1" NA
Mar 31 34° 56° 10° (1969) 81° (1981) 0.11" NA
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