September weather in Lyndon, IL
The average temperature in Lyndon in September is °F (°F–°F). Average precipitation: 3.72 inches.
September is a fall month in Lyndon, and is cooler than the annual average of 0°F. Expect about 6 days with precipitation. Daylight averages about 12h 16m.
Avg High
°F
Avg Low
°F
Precipitation
3.72 in
Daylight
12h 16m
September records in Lyndon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 1.15 in (2010) |
| September 2 | — | — | 0.40 in (2018) |
| September 3 | — | — | 1.07 in (2018) |
| September 4 | — | — | 1.90 in (2011) |
| September 5 | — | — | 1.41 in (2008) |
| September 6 | — | — | 2.56 in (2020) |
| September 7 | — | — | 1.65 in (2001) |
| September 8 | — | — | 2.20 in (2016) |
| September 9 | — | — | 1.10 in (2020) |
| September 10 | — | — | 1.74 in (2014) |
| September 11 | — | — | 1.64 in (2022) |
| September 12 | — | — | 1.45 in (1951) |
| September 13 | — | — | 4.12 in (2008) |
| September 14 | — | — | 1.34 in (1998) |
| September 15 | — | — | 0.90 in (1998) |
| September 16 | — | — | 0.95 in (2013) |
| September 17 | — | — | 1.17 in (2023) |
| September 18 | — | — | 1.92 in (2015) |
| September 19 | — | — | 1.78 in (2015) |
| September 20 | — | — | 0.63 in (1948) |
| September 21 | — | — | 0.85 in (1951) |
| September 22 | — | — | 0.70 in (2009) |
| September 23 | — | — | 1.25 in (2000) |
| September 24 | — | — | 0.62 in (2010) |
| September 25 | — | — | 0.44 in (2000) |
| September 26 | — | — | 1.00 in (1951) |
| September 27 | — | — | 0.94 in (2011) |
| September 28 | — | — | 3.26 in (1999) |
| September 29 | — | — | 0.82 in (1999) |
| September 30 | — | — | 0.19 in (1998) |