Princeton, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 29° -20° (1994) 68° (1989) 1.65" NA
February 20° 35° -22° (1996) 69° (2000) 1.48" NA
March 30° 47° -6° (2002) 82° (1991) 2.46" NA
April 40° 61° 17° (1997) 93° (2002) 3.76" NA
May 51° 73° 29° (1989) 95° (2006) 4.09" NA
June 61° 82° 40° (1993) 102° (1988) 4.36" NA
July 65° 85° 48° (2001) 102° (2005) 3.34" NA
August 63° 82° 48° (1994) 102° (1988) 4.76" NA
September 55° 75° 30° (1995) 96° (2000) 3.65" NA
October 43° 63° 19° (1988) 89° (2007) 2.94" NA
November 31° 47° 7° (1991) 79° (2000) 2.93" NA
December 19° 33° -18° (1989) 68° (2001) 2.45" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 59° 79° 50° (1994) 95° (2000) 0.15" NA
Sep 2 59° 79° 50° (2001) 93° (1999) 0.15" NA
Sep 3 59° 79° 48° (1997) 89° (1998) 0.14" NA
Sep 4 58° 78° 45° (1997) 93° (2007) 0.14" NA
Sep 5 58° 78° 45° (1988) 94° (1990) 0.14" NA
Sep 6 58° 78° 44° (1988) 95° (1990) 0.14" NA
Sep 7 58° 78° 48° (1988) 90° (2001) 0.14" NA
Sep 8 57° 77° 51° (1995) 92° (2002) 0.13" NA
Sep 9 57° 77° 47° (1995) 92° (1991) 0.13" NA
Sep 10 57° 77° 48° (1993) 89° (2002) 0.13" NA
Sep 11 56° 76° 44° (1993) 96° (2000) 0.13" NA
Sep 12 56° 76° 43° (2007) 93° (1991) 0.13" NA
Sep 13 56° 76° 45° (1996) 94° (1991) 0.12" NA
Sep 14 55° 75° 42° (1996) 90° (1991) 0.12" NA
Sep 15 55° 75° 37° (2007) 90° (1994) 0.12" NA
Sep 16 55° 75° 39° (2000) 85° (1992) 0.12" NA
Sep 17 54° 75° 45° (1990) 91° (1988) 0.12" NA
Sep 18 54° 74° 42° (1991) 90° (2000) 0.12" NA
Sep 19 53° 74° 39° (1991) 88° (2000) 0.11" NA
Sep 20 53° 74° 33° (1991) 85° (2007) 0.11" NA
Sep 21 53° 73° 36° (1991) 89° (2007) 0.11" NA
Sep 22 52° 73° 34° (1995) 90° (1988) 0.11" NA
Sep 23 52° 73° 30° (1995) 88° (2007) 0.11" NA
Sep 24 52° 72° 34° (1989) 90° (2007) 0.11" NA
Sep 25 51° 72° 36° (2001) 85° (1999) 0.11" NA
Sep 26 51° 72° 40° (1989) 90° (1998) 0.11" NA
Sep 27 51° 71° 37° (1989) 85° (1998) 0.1" NA
Sep 28 50° 71° 36° (2003) 81° (1995) 0.1" NA
Sep 29 50° 70° 36° (1992) 87° (2002) 0.1" NA
Sep 30 49° 70° 35° (1993) 86° (1994) 0.1" NA
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