Flagg, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 28° -33° (1985) 60° (2002) 1.55" 8.3"
February 16° 33° -24° (1979) 69° (2000) 1.5" 3.8"
March 26° 45° -14° (2002) 84° (1986) 1.89" 2.8"
April 37° 59° 8° (1982) 91° (1986) 3.21" 0.5"
May 48° 70° 25° (2005) 96° (1985) 3.98" 0"
June 58° 79° 36° (1992) 101° (1988) 4.16" 0"
July 61° 83° 45° (1984) 101° (1995) 3.56" 0"
August 60° 81° 39° (1986) 100° (1988) 4.06" 0"
September 51° 74° 24° (1984) 94° (2002) 3.17" 0"
October 39° 62° 16° (1988) 89° (1997) 2.87" 0"
November 29° 47° 1° (1986) 77° (2000) 2.53" 0.7"
December 16° 32° -22° (2000) 66° (1998) 1.94" 6.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 21° 38° 1° (1980) 64° (2000) 0.05" 0.1"
Mar 2 21° 38° -8° (1980) 66° (1992) 0.06" 0.1"
Mar 3 21° 39° -1° (1996) 67° (1983) 0.05" 0.2"
Mar 4 22° 39° -14° (2002) 72° (1983) 0.06" 0.1"
Mar 5 22° 40° -14° (2002) 69° (1983) 0.05" 0.1"
Mar 6 23° 40° 4° (1982) 72° (1983) 0.05" 0.2"
Mar 7 23° 41° 1° (1999) 73° (1987) 0.06" 0.1"
Mar 8 23° 41° -3° (1996) 78° (2000) 0.05" 0.1"
Mar 9 24° 42° -3° (1996) 75° (2000) 0.06" 0.1"
Mar 10 24° 42° -5° (2003) 62° (1985) 0.06" 0.1"
Mar 11 24° 43° -4° (2003) 61° (1990) 0.05" 0.1"
Mar 12 25° 43° 3° (1998) 73° (1990) 0.06" 0.1"
Mar 13 25° 44° 6° (1998) 76° (1990) 0.05" 0.1"
Mar 14 25° 44° 6° (1993) 76° (1990) 0.06" 0.1"
Mar 15 26° 45° 2° (1979) 73° (1995) 0.05" 0.1"
Mar 16 26° 45° 3° (1979) 73° (1995) 0.06" 0.1"
Mar 17 27° 46° 10° (1997) 69° (2003) 0.05" 0.1"
Mar 18 27° 46° 12° (1993) 74° (2003) 0.06" 0.1"
Mar 19 27° 47° 10° (1986) 70° (1995) 0.06" 0.1"
Mar 20 28° 47° 12° (1986) 59° (1987) 0.07" 0.1"
Mar 21 28° 48° 15° (1986) 65° (2003) 0.06" 0"
Mar 22 28° 48° 8° (1983) 70° (1991) 0.06" 0.1"
Mar 23 29° 49° 6° (1983) 72° (1987) 0.07" 0.1"
Mar 24 29° 49° 7° (1983) 74° (1994) 0.06" 0"
Mar 25 29° 50° 16° (1979) 72° (1986) 0.07" 0.1"
Mar 26 30° 50° 12° (1996) 77° (2007) 0.07" 0.1"
Mar 27 30° 50° 12° (1996) 77° (2007) 0.07" 0"
Mar 28 30° 51° 13° (1996) 78° (1986) 0.07" 0.1"
Mar 29 31° 51° 17° (1988) 84° (1986) 0.08" 0"
Mar 30 31° 52° 14° (1987) 79° (1986) 0.08" 0.1"
Mar 31 31° 52° 22° (1983) 83° (1986) 0.08" 0"
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