Roby, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 33° -22° (1884) 73° (1909) 1.62" 7.4"
February 22° 39° -24° (1905) 78° (1930) 1.8" 5.8"
March 32° 51° -12° (1960) 91° (1907) 3.15" 3.4"
April 42° 63° 17° (1920) 90° (1986) 3.36" 0.7"
May 53° 74° 28° (1966) 101° (1934) 4.06" 0"
June 62° 83° 39° (2003) 104° (1934) 3.77" 0"
July 66° 87° 48° (1975) 112° (1954) 3.53" 0"
August 64° 85° 43° (1986) 108° (1934) 3.41" 0"
September 55° 79° 31° (1899) 101° (1984) 2.83" 0"
October 44° 67° 13° (1925) 93° (2006) 2.62" 0"
November 34° 51° -3° (1964) 83° (1950) 2.87" 1.6"
December 23° 38° -21° (1989) 74° (1984) 2.54" 6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 48° 69° 32° (1963) 88° (1952) 0.12" NA
May 2 48° 70° 32° (2005) 89° (1959) 0.12" NA
May 3 48° 70° 29° (1976) 89° (1959) 0.13" NA
May 4 49° 70° 30° (2005) 90° (1952) 0.13" NA
May 5 49° 71° 34° (1944) 93° (1943) 0.13" NA
May 6 49° 71° 34° (1944) 88° (2004) 0.13" NA
May 7 50° 71° 34° (1989) 89° (1965) 0.13" NA
May 8 50° 72° 36° (1960) 91° (1963) 0.13" NA
May 9 50° 72° 32° (1966) 93° (1963) 0.13" NA
May 10 51° 72° 28° (1966) 92° (1928) 0.13" NA
May 11 51° 73° 33° (1907) 88° (2007) 0.13" NA
May 12 51° 73° 33° (1960) 92° (1956) 0.13" NA
May 13 52° 73° 36° (1960) 92° (1915) 0.13" NA
May 14 52° 74° 34° (1895) 91° (1932) 0.13" NA
May 15 52° 74° 36° (1997) 91° (1962) 0.13" NA
May 16 53° 74° 33° (1997) 93° (2001) 0.13" NA
May 17 53° 75° 35° (1973) 95° (1962) 0.13" NA
May 18 53° 75° 38° (2007) 95° (1962) 0.13" NA
May 19 54° 75° 35° (1929) 94° (1996) 0.13" NA
May 20 54° 76° 36° (1954) 94° (1987) 0.13" NA
May 21 54° 76° 35° (2002) 94° (1941) 0.14" NA
May 22 55° 77° 34° (1883) 95° (1925) 0.14" NA
May 23 55° 77° 36° (1963) 92° (1964) 0.14" NA
May 24 55° 77° 37° (1925) 94° (1939) 0.14" NA
May 25 56° 78° 35° (1925) 95° (1967) 0.14" NA
May 26 56° 78° 38° (1961) 95° (1911) 0.13" NA
May 27 57° 78° 34° (1992) 94° (1911) 0.13" NA
May 28 57° 78° 40° (1992) 94° (2006) 0.13" NA
May 29 57° 79° 39° (1965) 95° (1934) 0.13" NA
May 30 57° 79° 40° (1966) 96° (1934) 0.13" NA
May 31 58° 79° 39° (1889) 101° (1934) 0.13" NA
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