Jamestown, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° 38° -22° (1994) 71° (1970) 2.56" NA
February 23° 43° -20° (1982) 77° (2000) 2.62" NA
March 34° 53° -5° (1978) 85° (1986) 3.44" NA
April 44° 65° 22° (1997) 89° (1987) 3.97" NA
May 55° 74° 31° (1976) 97° (1967) 5.28" NA
June 64° 83° 41° (1963) 101° (1988) 4.37" NA
July 68° 87° 50° (1985) 104° (1980) 4.22" NA
August 66° 86° 43° (1965) 104° (2007) 2.8" NA
September 57° 79° 35° (1983) 98° (1984) 3.16" NA
October 45° 68° 21° (1981) 93° (1963) 3.6" NA
November 36° 55° 0° (1964) 83° (1968) 3.99" NA
December 24° 41° -14° (1985) 74° (1982) 3.59" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 28° 48° 7° (1993) 78° (1972) 0.09" NA
Mar 2 28° 48° 1° (1980) 73° (1976) 0.09" NA
Mar 3 29° 48° 4° (1980) 74° (1976) 0.1" NA
Mar 4 29° 49° -1° (1978) 76° (1983) 0.09" NA
Mar 5 30° 49° -5° (1978) 74° (1976) 0.1" NA
Mar 6 30° 50° 4° (1978) 67° (1987) 0.11" NA
Mar 7 30° 50° 13° (1996) 79° (2009) 0.1" NA
Mar 8 31° 50° 4° (1996) 79° (1974) 0.1" NA
Mar 9 31° 51° 4° (1996) 80° (1974) 0.11" NA
Mar 10 32° 51° 15° (1996) 77° (1974) 0.1" NA
Mar 11 32° 51° 15° (1969) 76° (2009) 0.11" NA
Mar 12 32° 52° 9° (1998) 78° (1972) 0.11" NA
Mar 13 33° 52° 9° (1998) 78° (1972) 0.11" NA
Mar 14 33° 53° 11° (1993) 77° (2007) 0.11" NA
Mar 15 34° 53° 11° (1993) 77° (1977) 0.11" NA
Mar 16 34° 53° 21° (1970) 75° (1977) 0.11" NA
Mar 17 34° 54° 20° (1967) 79° (1982) 0.12" NA
Mar 18 35° 54° 18° (1967) 73° (2009) 0.11" NA
Mar 19 35° 55° 11° (1965) 75° (1979) 0.11" NA
Mar 20 36° 55° 11° (1965) 76° (1969) 0.12" NA
Mar 21 36° 55° 12° (1986) 76° (1972) 0.12" NA
Mar 22 36° 56° 16° (2002) 84° (1997) 0.11" NA
Mar 23 37° 56° 19° (2002) 78° (1988) 0.12" NA
Mar 24 37° 57° 2° (1974) 79° (1994) 0.12" NA
Mar 25 37° 57° 6° (1974) 81° (1967) 0.12" NA
Mar 26 38° 57° 15° (1974) 82° (2007) 0.11" NA
Mar 27 38° 58° 19° (1964) 77° (1989) 0.12" NA
Mar 28 38° 58° 25° (1965) 81° (2007) 0.13" NA
Mar 29 39° 59° 23° (1970) 85° (1985) 0.12" NA
Mar 30 39° 59° 19° (1964) 83° (1986) 0.13" NA
Mar 31 39° 59° 21° (1969) 85° (1986) 0.13" NA
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