September weather in Sidney, IL
The average temperature in Sidney in September is °F (°F–°F). Average precipitation: 3.09 inches.
September is a fall month in Sidney, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 12h 15m.
Avg High
°F
Avg Low
°F
Precipitation
3.09 in
Daylight
12h 15m
September records in Sidney
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1913) | 41.0°F (1893) | 3.90 in (2003) |
| September 2 | 100.0°F (1913) | 41.0°F (1909) | 2.15 in (2012) |
| September 3 | 100.0°F (1913) | 36.0°F (1908) | 0.95 in (2010) |
| September 4 | 96.1°F (1899) | 42.1°F (1902) | 2.34 in (1898) |
| September 5 | 100.9°F (1899) | 43.0°F (1902) | 1.92 in (1894) |
| September 6 | 100.9°F (1899) | 43.0°F (1909) | 1.45 in (2023) |
| September 7 | 100.0°F (1899) | 41.0°F (1896) | 1.04 in (1913) |
| September 8 | 95.0°F (1897) | 39.9°F (1898) | 3.51 in (2018) |
| September 9 | 95.0°F (1897) | 46.0°F (1898) | 2.08 in (2007) |
| September 10 | 96.1°F (1897) | 39.0°F (1902) | 2.27 in (1905) |
| September 11 | 97.0°F (1897) | 43.0°F (1894) | 0.86 in (1901) |
| September 12 | 98.1°F (1897) | 45.0°F (1898) | 0.64 in (1893) |
| September 13 | 97.0°F (1897) | 34.0°F (1902) | 0.84 in (1903) |
| September 14 | 96.1°F (1897) | 30.9°F (1902) | 0.33 in (1901) |
| September 15 | 96.1°F (1897) | 36.0°F (1902) | 0.97 in (1913) |
| September 16 | 93.0°F (1899) | 42.1°F (1902) | 0.85 in (2005) |
| September 17 | 93.9°F (1895) | 36.0°F (1900) | 0.51 in (1912) |
| September 18 | 97.0°F (1893) | 30.9°F (1901) | 1.65 in (1904) |
| September 19 | 93.0°F (1908) | 30.0°F (1901) | 1.08 in (2022) |
| September 20 | 93.0°F (1895) | 32.0°F (1896) | 0.64 in (2005) |
| September 21 | 93.0°F (1895) | 27.0°F (1897) | 1.48 in (1909) |
| September 22 | 93.0°F (1895) | 28.9°F (1896) | 0.93 in (2012) |
| September 23 | 87.1°F (1901) | 33.1°F (1896) | 1.35 in (1893) |
| September 24 | 91.0°F (1901) | 37.0°F (1894) | 1.22 in (2024) |
| September 25 | 91.9°F (1908) | 33.1°F (1894) | 2.02 in (1911) |
| September 26 | 95.0°F (1897) | 30.0°F (1893) | 1.42 in (2005) |
| September 27 | 90.0°F (1905) | 24.1°F (1899) | 1.48 in (1908) |
| September 28 | 90.0°F (1904) | 33.1°F (1909) | 0.98 in (1911) |
| September 29 | 88.0°F (1898) | 25.0°F (1899) | 1.11 in (1906) |
| September 30 | 91.0°F (1897) | 17.1°F (1899) | 0.74 in (1902) |