Rock Grove, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° -27° (1985) 61° (2002) 1.33" 8.3"
February 14° 31° -27° (1996) 65° (1999) 1.33" 6.8"
March 25° 43° -8° (2002) 85° (1986) 2.14" 6.4"
April 36° 57° 9° (1982) 92° (1980) 3.23" 2"
May 47° 69° 25° (2005) 95° (1985) 3.96" 0.1"
June 57° 78° 38° (1993) 100° (1988) 4.46" 0"
July 62° 82° 46° (1979) 101° (1988) 3.57" 0"
August 59° 80° 40° (1986) 101° (1988) 4.11" 0"
September 50° 73° 28° (1984) 96° (1985) 3.67" 0"
October 39° 61° 15° (1988) 90° (1997) 2.58" 0.1"
November 28° 44° -5° (1977) 77° (2000) 2.69" 2.2"
December 16° 30° -23° (2000) 67° (2001) 1.72" 8.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Nov 1 33° 53° 20° (1993) 77° (2000) 0.09" NA
Nov 2 33° 52° 20° (1991) 72° (1990) 0.09" NA
Nov 3 32° 51° 13° (1991) 71° (1978) 0.09" NA
Nov 4 32° 51° 10° (1991) 75° (1978) 0.09" NA
Nov 5 32° 50° 10° (1991) 71° (1978) 0.09" NA
Nov 6 31° 50° 16° (1991) 72° (1978) 0.09" NA
Nov 7 31° 49° 4° (1991) 69° (1980) 0.09" NA
Nov 8 31° 48° 4° (1991) 71° (2001) 0.09" NA
Nov 9 30° 48° 9° (1991) 74° (1999) 0.09" NA
Nov 10 30° 47° 15° (2003) 74° (1999) 0.09" NA
Nov 11 30° 47° 13° (1986) 63° (1978) 0.09" NA
Nov 12 29° 46° 12° (1986) 61° (1982) 0.1" NA
Nov 13 29° 46° 3° (1986) 63° (2007) 0.1" NA
Nov 14 29° 45° 5° (1986) 71° (1989) 0.1" NA
Nov 15 28° 45° 11° (1996) 68° (1990) 0.09" NA
Nov 16 28° 44° 13° (1995) 68° (1990) 0.09" NA
Nov 17 27° 43° 11° (1989) 66° (1975) 0.09" NA
Nov 18 27° 43° 14° (1989) 68° (1975) 0.09" NA
Nov 19 27° 42° 8° (1986) 70° (1999) 0.09" NA
Nov 20 26° 42° 11° (2000) 65° (1975) 0.09" NA
Nov 21 26° 41° 10° (1985) 69° (2003) 0.09" NA
Nov 22 25° 41° 11° (1985) 64° (1990) 0.09" NA
Nov 23 25° 40° 7° (1989) 59° (1983) 0.09" NA
Nov 24 25° 40° 5° (1985) 62° (1983) 0.09" NA
Nov 25 24° 39° 5° (1985) 63° (2001) 0.09" NA
Nov 26 24° 39° -5° (1977) 59° (1976) 0.09" NA
Nov 27 23° 38° -4° (1977) 66° (1990) 0.08" NA
Nov 28 23° 38° 1° (1976) 64° (1998) 0.08" NA
Nov 29 22° 37° -5° (1976) 63° (1998) 0.08" NA
Nov 30 22° 37° -2° (1995) 65° (1998) 0.08" NA
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