September weather in Mount Morris, IL
The average temperature in Mount Morris in September is °F (°F–°F). Average precipitation: 3.28 inches.
September is a fall month in Mount Morris, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 12h 16m.
Avg High
°F
Avg Low
°F
Precipitation
3.28 in
Daylight
12h 16m
September records in Mount Morris
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 1.48 in (1989) |
| September 2 | — | — | 0.43 in (2018) |
| September 3 | — | — | 2.25 in (2019) |
| September 4 | — | — | 1.00 in (1991) |
| September 5 | — | — | 1.32 in (2008) |
| September 6 | — | — | 1.33 in (1989) |
| September 7 | — | — | 1.13 in (1995) |
| September 8 | — | — | 1.60 in (2020) |
| September 9 | — | — | 1.74 in (2020) |
| September 10 | — | — | 1.00 in (1991) |
| September 11 | — | — | 2.20 in (2000) |
| September 12 | — | — | 1.63 in (2022) |
| September 13 | — | — | 2.41 in (2008) |
| September 14 | — | — | 1.23 in (1998) |
| September 15 | — | — | 0.85 in (2019) |
| September 16 | — | — | 0.63 in (2004) |
| September 17 | — | — | 0.93 in (1992) |
| September 18 | — | — | 1.13 in (2015) |
| September 19 | — | — | 1.00 in (1988) |
| September 20 | — | — | 0.80 in (2001) |
| September 21 | — | — | 2.17 in (1950) |
| September 22 | — | — | 1.83 in (2019) |
| September 23 | — | — | 0.82 in (1994) |
| September 24 | — | — | 1.00 in (2001) |
| September 25 | — | — | 1.10 in (1993) |
| September 26 | — | — | 1.89 in (1951) |
| September 27 | — | — | 1.65 in (2011) |
| September 28 | — | — | 4.10 in (1999) |
| September 29 | — | — | 0.62 in (1999) |
| September 30 | — | — | 0.50 in (2008) |