September weather in Russellville, IL
The average temperature in Russellville in September is 69.2°F (56.9°F–81.6°F). Average precipitation: 2.94 inches.
September is a fall month in Russellville, and is warmer than the annual average of 55.7°F. Daily temperatures swing about 24.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
81.6°F
Avg Low
56.9°F
Precipitation
2.94 in
Daylight
12h 14m
September records in Russellville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (2011) | 50.0°F (2009) | 1.42 in (2003) |
| September 2 | 100.0°F (2011) | 50.0°F (2009) | 1.99 in (2014) |
| September 3 | 100.9°F (2011) | 52.0°F (2025) | 0.13 in (2022) |
| September 4 | 99.0°F (2007) | 48.0°F (1997) | 0.18 in (2008) |
| September 5 | 97.0°F (2018) | 45.0°F (1997) | 2.44 in (2012) |
| September 6 | 96.1°F (1998) | 48.0°F (2017) | 0.37 in (2009) |
| September 7 | 96.1°F (2002) | 45.0°F (2017) | 1.81 in (2018) |
| September 8 | 96.1°F (2002) | 43.0°F (2025) | 4.72 in (2018) |
| September 9 | 98.1°F (2002) | 41.0°F (2024) | 1.67 in (2015) |
| September 10 | 97.0°F (2002) | 46.0°F (1998) | 1.33 in (2000) |
| September 11 | 96.1°F (2013) | 48.0°F (1998) | 0.64 in (2022) |
| September 12 | 93.0°F (2019) | 48.9°F (1997) | 3.05 in (2008) |
| September 13 | 93.0°F (2011) | 46.0°F (2014) | 1.03 in (2024) |
| September 14 | 93.9°F (2025) | 44.1°F (1999) | 0.59 in (2011) |
| September 15 | 93.0°F (2010) | 43.0°F (2007) | 1.05 in (2002) |
| September 16 | 93.0°F (2019) | 43.0°F (2000) | 1.25 in (2016) |
| September 17 | 91.9°F (2018) | 44.1°F (2014) | 0.44 in (2016) |
| September 18 | 95.0°F (2018) | 44.1°F (2012) | 1.00 in (2011) |
| September 19 | 95.0°F (2018) | 39.9°F (2012) | 0.84 in (2005) |
| September 20 | 95.0°F (2018) | 43.0°F (2003) | 2.07 in (2002) |
| September 21 | 98.1°F (2010) | 45.0°F (2006) | 0.45 in (2021) |
| September 22 | 95.0°F (2005) | 37.9°F (1999) | 1.38 in (2025) |
| September 23 | 96.1°F (2010) | 36.0°F (2012) | 1.90 in (2025) |
| September 24 | 93.9°F (2007) | 34.0°F (2012) | 3.43 in (2009) |
| September 25 | 93.0°F (2017) | 39.0°F (2001) | 2.27 in (2011) |
| September 26 | 93.0°F (2017) | 36.0°F (2001) | 1.67 in (2003) |
| September 27 | 91.9°F (1998) | 42.1°F (2000) | 1.48 in (2024) |
| September 28 | 93.0°F (1999) | 39.0°F (2022) | 0.41 in (2005) |
| September 29 | 93.9°F (2019) | 41.0°F (2022) | 0.79 in (2015) |
| September 30 | 95.0°F (2019) | 39.0°F (2004) | 0.14 in (2016) |