September weather in Gilman, IL
The average temperature in Gilman in September is 66.3°F (52.2°F–80.4°F). Average precipitation: 2.86 inches.
September is a fall month in Gilman, and is warmer than the annual average of 51.9°F. Daily temperatures swing about 28.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
80.4°F
Avg Low
52.2°F
Precipitation
2.86 in
Daylight
12h 15m
September records in Gilman
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1984) | 45.0°F (2009) | 2.68 in (2003) |
| September 2 | 100.9°F (2011) | 43.0°F (1987) | 1.01 in (1980) |
| September 3 | 100.0°F (2011) | 42.1°F (1994) | 1.12 in (1993) |
| September 4 | 98.1°F (2011) | 42.1°F (1974) | 0.49 in (1973) |
| September 5 | 96.1°F (1990) | 37.9°F (1988) | 2.63 in (2008) |
| September 6 | 98.1°F (1990) | 37.9°F (1984) | 1.92 in (1971) |
| September 7 | 97.0°F (1998) | 39.0°F (1986) | 0.44 in (1941) |
| September 8 | 95.0°F (1978) | 39.0°F (1986) | 1.25 in (1989) |
| September 9 | 97.0°F (1983) | 43.0°F (1979) | 1.93 in (1976) |
| September 10 | 97.0°F (1983) | 41.0°F (1969) | 1.43 in (1992) |
| September 11 | 93.0°F (2005) | 42.1°F (1970) | 0.68 in (1947) |
| September 12 | 96.1°F (1991) | 36.0°F (1985) | 0.69 in (1951) |
| September 13 | 95.0°F (1991) | 37.9°F (1985) | 2.83 in (1974) |
| September 14 | 95.0°F (2005) | 37.9°F (1985) | 3.04 in (1972) |
| September 15 | 93.0°F (1991) | 37.0°F (2011) | 2.19 in (2008) |
| September 16 | 91.0°F (1978) | 35.1°F (2007) | 0.74 in (2004) |
| September 17 | 93.9°F (1988) | 35.1°F (2007) | 2.16 in (1978) |
| September 18 | 91.9°F (1983) | 35.1°F (1991) | 1.12 in (1949) |
| September 19 | 93.0°F (1978) | 34.0°F (1991) | 1.46 in (1983) |
| September 20 | 93.0°F (2000) | 33.1°F (1991) | 0.94 in (1971) |
| September 21 | 91.9°F (1986) | 37.0°F (1982) | 1.92 in (1950) |
| September 22 | 97.0°F (2010) | 35.1°F (1974) | 1.40 in (1970) |
| September 23 | 96.1°F (2005) | 26.1°F (1995) | 0.71 in (2000) |
| September 24 | 91.9°F (2010) | 28.9°F (1983) | 1.35 in (1945) |
| September 25 | 91.9°F (2007) | 36.0°F (2001) | 1.02 in (1941) |
| September 26 | 93.0°F (2007) | 30.0°F (1989) | 1.10 in (1942) |
| September 27 | 91.0°F (1998) | 32.0°F (1989) | 1.57 in (1996) |
| September 28 | 90.0°F (1998) | 35.1°F (1984) | 0.92 in (1945) |
| September 29 | 88.0°F (1971) | 30.9°F (1984) | 1.57 in (1986) |
| September 30 | 91.0°F (1971) | 28.9°F (1984) | 1.17 in (1981) |