September weather in Hartford, IL
The average temperature in Hartford in September is °F (°F–°F). Average precipitation: 3.26 inches.
September is a fall month in Hartford, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 12h 14m.
Avg High
°F
Avg Low
°F
Precipitation
3.26 in
Daylight
12h 14m
September records in Hartford
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 78.1°F (1987) | 46.9°F (1987) | 3.48 in (1931) |
| September 2 | 82.0°F (1987) | 60.1°F (1987) | 2.78 in (2003) |
| September 3 | 82.0°F (1987) | 48.9°F (1987) | 1.64 in (1934) |
| September 4 | 88.0°F (1987) | 51.1°F (1987) | 3.70 in (1910) |
| September 5 | 93.9°F (1987) | 61.0°F (1987) | 1.99 in (2008) |
| September 6 | 93.9°F (1987) | 64.9°F (1987) | 2.75 in (1971) |
| September 7 | 80.1°F (1987) | 64.9°F (1987) | 1.80 in (1917) |
| September 8 | 84.0°F (1987) | 64.9°F (1987) | 1.73 in (2018) |
| September 9 | 81.0°F (1987) | 64.9°F (1987) | 2.05 in (1973) |
| September 10 | 84.9°F (1987) | 60.1°F (1987) | 2.00 in (2016) |
| September 11 | 86.0°F (1987) | 61.0°F (1987) | 1.70 in (2010) |
| September 12 | 84.0°F (1987) | 57.9°F (1987) | 2.00 in (1920) |
| September 13 | 88.0°F (1987) | 60.1°F (1987) | 2.95 in (1945) |
| September 14 | 91.9°F (1987) | 57.9°F (1987) | 3.92 in (2008) |
| September 15 | 82.0°F (1987) | 68.0°F (1987) | 1.44 in (1930) |
| September 16 | 88.0°F (1987) | 64.9°F (1987) | 2.00 in (1911) |
| September 17 | 82.0°F (1987) | 63.0°F (1987) | 3.42 in (1969) |
| September 18 | 75.9°F (1987) | 61.0°F (1987) | 3.28 in (1968) |
| September 19 | 81.0°F (1987) | 51.1°F (1987) | 2.36 in (1966) |
| September 20 | 73.0°F (1987) | 48.9°F (1987) | 2.66 in (1954) |
| September 21 | 75.0°F (1987) | 46.9°F (1987) | 1.54 in (1919) |
| September 22 | 75.0°F (1987) | 46.9°F (1987) | 1.40 in (1965) |
| September 23 | 75.0°F (1987) | 51.1°F (1987) | 2.75 in (1955) |
| September 24 | 87.1°F (1987) | 54.0°F (1987) | 3.32 in (2024) |
| September 25 | 82.0°F (1987) | 48.9°F (1987) | 2.89 in (1941) |
| September 26 | 84.9°F (1987) | 55.0°F (1987) | 3.01 in (1925) |
| September 27 | 84.0°F (1987) | 57.9°F (1987) | 1.60 in (1933) |
| September 28 | 84.9°F (1987) | 57.0°F (1987) | 1.18 in (1926) |
| September 29 | 72.0°F (1987) | 55.0°F (1987) | 2.25 in (1919) |
| September 30 | 75.0°F (1987) | 46.9°F (1987) | 2.02 in (1986) |