September weather in Rockwood, IL
The average temperature in Rockwood in September is °F (°F–°F). Average precipitation: 3.14 inches.
September is a fall month in Rockwood, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 12h 14m.
Avg High
°F
Avg Low
°F
Precipitation
3.14 in
Daylight
12h 14m
September records in Rockwood
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (1907) | 66.0°F (1908) | 2.40 in (1950) |
| September 2 | 91.0°F (1905) | 62.1°F (1908) | 1.76 in (2012) |
| September 3 | 82.0°F (1910) | 51.1°F (1908) | 1.38 in (1993) |
| September 4 | 86.0°F (1910) | 57.0°F (1908) | 2.12 in (1986) |
| September 5 | 89.1°F (1908) | 57.9°F (1908) | 1.61 in (1965) |
| September 6 | 88.0°F (1907) | 57.9°F (1907) | 1.56 in (1910) |
| September 7 | 93.0°F (1907) | 62.1°F (1908) | 2.25 in (1969) |
| September 8 | 91.9°F (1910) | 64.0°F (1905) | 3.86 in (2018) |
| September 9 | 91.0°F (1910) | 57.0°F (1907) | 2.03 in (1976) |
| September 10 | 91.0°F (1908) | 53.1°F (1907) | 2.37 in (2010) |
| September 11 | 90.0°F (1908) | 51.1°F (1907) | 2.50 in (1984) |
| September 12 | 93.0°F (1910) | 55.9°F (1907) | 1.90 in (1965) |
| September 13 | 93.0°F (1908) | 57.0°F (1907) | 6.00 in (1949) |
| September 14 | 93.0°F (1908) | 55.9°F (1906) | 2.50 in (1982) |
| September 15 | 95.0°F (1908) | 54.0°F (1910) | 1.58 in (2021) |
| September 16 | 97.0°F (1908) | 57.9°F (1910) | 3.00 in (1996) |
| September 17 | 93.9°F (1908) | 60.1°F (1910) | 6.44 in (1905) |
| September 18 | 95.0°F (1907) | 64.0°F (1910) | 7.90 in (1986) |
| September 19 | 91.9°F (1907) | 64.0°F (1906) | 2.20 in (1966) |
| September 20 | 91.9°F (1907) | 60.1°F (1905) | 1.43 in (2002) |
| September 21 | 93.9°F (1908) | 52.0°F (1910) | 1.46 in (1992) |
| September 22 | 88.0°F (1906) | 50.0°F (1907) | 2.50 in (1965) |
| September 23 | 88.0°F (1910) | 54.0°F (1907) | 3.70 in (1984) |
| September 24 | 86.0°F (1908) | 57.9°F (1907) | 2.00 in (1993) |
| September 25 | 86.0°F (1905) | 45.0°F (1907) | 0.89 in (2018) |
| September 26 | 82.0°F (1906) | 46.0°F (1907) | 1.14 in (1906) |
| September 27 | 88.0°F (1907) | 46.0°F (1908) | 1.83 in (1996) |
| September 28 | 84.0°F (1905) | 41.0°F (1908) | 1.50 in (1906) |
| September 29 | 88.0°F (1905) | 39.9°F (1908) | 1.45 in (1959) |
| September 30 | 86.0°F (1905) | 50.0°F (1906) | 1.02 in (1906) |