Roby, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 35° -22° (1884) 73° (1909) 1.82" 6.4"
February 23° 40° -24° (1905) 78° (1930) 1.89" 5.5"
March 32° 52° -12° (1960) 91° (1907) 2.63" 2.5"
April 42° 65° 17° (1920) 90° (1986) 3.51" 0.3"
May 53° 75° 28° (1966) 101° (1934) 4.24" 0"
June 62° 83° 39° (2003) 104° (1934) 4.46" 0"
July 65° 86° 48° (1975) 112° (1954) 3.94" 0"
August 64° 85° 43° (1986) 108° (1934) 3.24" 0"
September 55° 79° 31° (1899) 101° (1984) 2.9" 0"
October 44° 66° 13° (1925) 93° (2006) 3.15" 0"
November 34° 52° -3° (1964) 83° (1950) 3.21" 0.6"
December 23° 38° -21° (1989) 74° (1984) 2.52" 5.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 61° 84° 43° (1967) 101° (1984) 0.1" 0"
Sep 2 60° 83° 48° (2009) 99° (1953) 0.09" 0"
Sep 3 60° 83° 40° (1952) 99° (1925) 0.1" 0"
Sep 4 60° 83° 42° (1974) 100° (1954) 0.09" 0"
Sep 5 59° 83° 44° (1997) 99° (1954) 0.09" 0"
Sep 6 59° 82° 40° (1988) 100° (1954) 0.1" 0"
Sep 7 58° 82° 41° (1956) 100° (1939) 0.1" 0"
Sep 8 58° 82° 39° (1986) 97° (1933) 0.1" 0"
Sep 9 58° 82° 39° (1883) 100° (1925) 0.11" 0"
Sep 10 57° 81° 41° (1976) 98° (1983) 0.1" 0"
Sep 11 57° 81° 39° (1917) 98° (1936) 0.1" 0"
Sep 12 56° 81° 39° (1955) 96° (1939) 0.11" 0"
Sep 13 56° 80° 38° (1902) 100° (1939) 0.1" 0"
Sep 14 55° 80° 37° (1996) 100° (1939) 0.1" 0"
Sep 15 55° 80° 35° (2007) 100° (1939) 0.1" 0"
Sep 16 54° 79° 39° (2000) 100° (1939) 0.09" 0"
Sep 17 54° 79° 39° (1999) 95° (1954) 0.09" 0"
Sep 18 54° 78° 35° (1901) 95° (1893) 0.09" 0"
Sep 19 53° 78° 38° (1991) 95° (1978) 0.09" 0"
Sep 20 53° 77° 34° (1991) 96° (1931) 0.1" 0"
Sep 21 52° 77° 36° (1991) 96° (1931) 0.09" 0"
Sep 22 52° 77° 33° (1983) 95° (2005) 0.1" 0"
Sep 23 51° 76° 32° (1995) 93° (2007) 0.09" 0"
Sep 24 51° 76° 33° (1989) 93° (2007) 0.1" 0"
Sep 25 50° 75° 36° (2001) 94° (1891) 0.1" 0"
Sep 26 50° 75° 35° (2000) 92° (1897) 0.09" 0"
Sep 27 50° 74° 37° (1942) 91° (1998) 0.1" 0"
Sep 28 49° 74° 33° (1942) 94° (1953) 0.09" 0"
Sep 29 49° 74° 31° (1899) 100° (1953) 0.1" 0"
Sep 30 48° 73° 31° (1899) 92° (1971) 0.09" 0"
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