September weather in Fulton, IL
The average temperature in Fulton in September is 65.5°F (55.2°F–75.9°F). Average precipitation: 3.66 inches.
September is a fall month in Fulton, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 20.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
75.9°F
Avg Low
55.2°F
Precipitation
3.66 in
Daylight
12h 16m
September records in Fulton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1953) | 30.0°F (1999) | 2.40 in (2018) |
| September 2 | 96.1°F (1953) | 44.1°F (1946) | 0.88 in (2018) |
| September 3 | 93.0°F (1939) | 48.0°F (1952) | 1.93 in (2018) |
| September 4 | 91.9°F (1960) | 42.1°F (1974) | 2.66 in (2011) |
| September 5 | 93.0°F (1960) | 42.1°F (1974) | 2.48 in (1971) |
| September 6 | 93.0°F (1985) | 42.1°F (1988) | 2.70 in (2020) |
| September 7 | 95.0°F (1939) | 42.1°F (1988) | 0.62 in (1942) |
| September 8 | 96.1°F (1985) | 46.9°F (1988) | 3.43 in (1941) |
| September 9 | 95.0°F (1985) | 46.9°F (1943) | 3.00 in (1965) |
| September 10 | 95.0°F (1983) | 43.0°F (1943) | 2.56 in (1992) |
| September 11 | 95.0°F (2013) | 43.0°F (1943) | 1.15 in (2022) |
| September 12 | 91.9°F (1952) | 39.0°F (1955) | 1.53 in (1949) |
| September 13 | 91.0°F (1939) | 39.0°F (1964) | 2.75 in (1961) |
| September 14 | 93.0°F (1939) | 39.9°F (1975) | 4.13 in (1961) |
| September 15 | 93.9°F (1939) | 39.9°F (2000) | 3.07 in (2019) |
| September 16 | 90.0°F (2024) | 37.9°F (2007) | 1.06 in (1983) |
| September 17 | 89.1°F (1972) | 42.1°F (1984) | 1.31 in (1997) |
| September 18 | 91.0°F (1988) | 37.0°F (1959) | 3.91 in (2015) |
| September 19 | 90.0°F (1947) | 37.0°F (1997) | 2.10 in (2001) |
| September 20 | 91.9°F (2021) | 30.9°F (1991) | 2.34 in (1965) |
| September 21 | 93.9°F (2022) | 26.1°F (1999) | 3.40 in (1947) |
| September 22 | 90.0°F (2024) | 34.0°F (1999) | 1.78 in (1970) |
| September 23 | 93.0°F (2017) | 33.1°F (1995) | 1.49 in (2000) |
| September 24 | 93.0°F (2017) | 33.1°F (1942) | 2.01 in (1968) |
| September 25 | 93.0°F (2017) | 30.9°F (1942) | 1.83 in (1973) |
| September 26 | 91.9°F (2017) | 30.9°F (1942) | 2.00 in (1993) |
| September 27 | 88.0°F (2025) | 32.0°F (1991) | 2.55 in (1959) |
| September 28 | 90.0°F (1953) | 30.0°F (1942) | 2.00 in (2019) |
| September 29 | 93.9°F (1953) | 34.0°F (1942) | 1.73 in (1972) |
| September 30 | 91.0°F (2025) | 33.1°F (1984) | 1.10 in (1941) |