September weather in Eureka, IL
The average temperature in Eureka in September is °F (°F–°F). Average precipitation: 3.18 inches.
September is a fall month in Eureka, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 12h 15m.
Avg High
°F
Avg Low
°F
Precipitation
3.18 in
Daylight
12h 15m
September records in Eureka
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 1.24 in (2010) |
| September 2 | — | — | 2.13 in (2012) |
| September 3 | — | — | 0.38 in (2010) |
| September 4 | — | — | 0.77 in (2008) |
| September 5 | — | — | 0.01 in (2015) |
| September 6 | — | — | 1.07 in (2009) |
| September 7 | — | — | 2.49 in (2018) |
| September 8 | — | — | 2.62 in (2016) |
| September 9 | — | — | 1.31 in (2015) |
| September 10 | — | — | 2.19 in (2014) |
| September 11 | — | — | 0.56 in (2006) |
| September 12 | — | — | 0.92 in (2020) |
| September 13 | — | — | 0.65 in (2008) |
| September 14 | — | — | 3.90 in (2008) |
| September 15 | — | — | 1.35 in (2008) |
| September 16 | — | — | 0.40 in (2014) |
| September 17 | — | — | 0.64 in (2016) |
| September 18 | — | — | 1.35 in (2001) |
| September 19 | — | — | 2.03 in (2015) |
| September 20 | — | — | 0.37 in (2019) |
| September 21 | — | — | 1.10 in (2021) |
| September 22 | — | — | 0.80 in (2019) |
| September 23 | — | — | 0.54 in (2019) |
| September 24 | — | — | 0.49 in (2010) |
| September 25 | — | — | 0.21 in (2021) |
| September 26 | — | — | 0.28 in (2010) |
| September 27 | — | — | 1.42 in (2011) |
| September 28 | — | — | 3.25 in (2019) |
| September 29 | — | — | 0.43 in (2013) |
| September 30 | — | — | 0.42 in (2019) |