September weather in Crescent City, IL
The average temperature in Crescent City in September is 65.4°F (52.2°F–78.7°F). Average precipitation: 3.19 inches.
September is a fall month in Crescent City, and is warmer than the annual average of 50.7°F. Daily temperatures swing about 26.5°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
78.7°F
Avg Low
52.2°F
Precipitation
3.19 in
Daylight
12h 15m
September records in Crescent City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1913) | 39.9°F (1967) | 7.15 in (1989) |
| September 2 | 100.9°F (1913) | 37.9°F (1909) | 2.40 in (1934) |
| September 3 | 98.1°F (1899) | 37.9°F (1908) | 3.88 in (1993) |
| September 4 | 97.0°F (1912) | 39.9°F (1974) | 1.45 in (1926) |
| September 5 | 99.0°F (1912) | 39.9°F (1974) | 2.92 in (2008) |
| September 6 | 104.0°F (1899) | 39.9°F (1962) | 4.05 in (1971) |
| September 7 | 100.9°F (1939) | 41.0°F (1988) | 1.50 in (1989) |
| September 8 | 102.0°F (1899) | 35.1°F (1986) | 1.43 in (1980) |
| September 9 | 97.0°F (1897) | 36.0°F (1986) | 1.63 in (1989) |
| September 10 | 99.0°F (1912) | 39.0°F (1910) | 1.33 in (1992) |
| September 11 | 99.0°F (1908) | 37.9°F (1967) | 1.68 in (1921) |
| September 12 | 99.0°F (1897) | 39.0°F (1955) | 1.40 in (1906) |
| September 13 | 102.9°F (1939) | 33.1°F (1902) | 1.83 in (1977) |
| September 14 | 104.0°F (1939) | 34.0°F (1902) | 2.38 in (1972) |
| September 15 | 102.0°F (1939) | 37.0°F (2011) | 4.35 in (2008) |
| September 16 | 100.9°F (1939) | 30.0°F (1916) | 2.00 in (1921) |
| September 17 | 96.1°F (1906) | 37.9°F (1937) | 2.90 in (1911) |
| September 18 | 96.1°F (1908) | 30.0°F (1900) | 1.48 in (2015) |
| September 19 | 97.0°F (1908) | 30.9°F (1901) | 2.05 in (2017) |
| September 20 | 97.0°F (1908) | 30.0°F (1991) | 1.25 in (1900) |
| September 21 | 93.9°F (1940) | 28.9°F (1897) | 1.79 in (1947) |
| September 22 | 93.9°F (2010) | 33.1°F (1976) | 1.90 in (1970) |
| September 23 | 93.9°F (2005) | 27.0°F (1995) | 2.10 in (1926) |
| September 24 | 95.0°F (1908) | 27.0°F (1995) | 1.55 in (1902) |
| September 25 | 93.9°F (1908) | 30.9°F (2012) | 1.72 in (1902) |
| September 26 | 93.9°F (1897) | 33.1°F (1940) | 3.93 in (1933) |
| September 27 | 93.0°F (1905) | 30.0°F (1899) | 2.10 in (1908) |
| September 28 | 93.0°F (1905) | 28.9°F (1942) | 3.13 in (2019) |
| September 29 | 97.0°F (1953) | 28.0°F (1899) | 1.40 in (1927) |
| September 30 | 95.0°F (1897) | 19.9°F (1899) | 1.76 in (1986) |