September weather in Lebanon, OR
The average temperature in Lebanon in September is 64.9°F (50.7°F–79.1°F). Average precipitation: inches.
September is a fall month in Lebanon, and is warmer than the annual average of 54.9°F. Daily temperatures swing about 28.4°F between overnight low and afternoon high. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
79.1°F
Avg Low
50.7°F
Precipitation
in
Daylight
12h 17m
September records in Lebanon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (2017) | 43.0°F (2008) | 0.01 in (2016) |
| September 2 | 100.0°F (2017) | 43.0°F (2012) | 0.02 in (2015) |
| September 3 | 100.9°F (2017) | 46.0°F (2011) | 0.00 in (2008) |
| September 4 | 93.9°F (2011) | 44.1°F (2014) | 0.25 in (2009) |
| September 5 | 100.0°F (2014) | 46.9°F (2010) | 3.31 in (2013) |
| September 6 | 100.0°F (2014) | 44.1°F (2010) | 0.15 in (2009) |
| September 7 | 97.0°F (2012) | 48.9°F (2018) | 0.32 in (2010) |
| September 8 | 93.0°F (2008) | 45.0°F (2009) | 0.02 in (2010) |
| September 9 | 93.9°F (2021) | 48.0°F (2018) | 0.00 in (2008) |
| September 10 | 98.1°F (2011) | 44.1°F (2008) | 0.00 in (2008) |
| September 11 | 96.1°F (2009) | 42.1°F (2012) | 0.11 in (2018) |
| September 12 | 93.9°F (2009) | 42.1°F (2012) | 0.10 in (2018) |
| September 13 | 91.9°F (2012) | 45.0°F (2008) | 0.00 in (2008) |
| September 14 | 93.0°F (2014) | 44.1°F (2018) | 0.04 in (2010) |
| September 15 | 91.9°F (2008) | 44.1°F (2018) | 0.12 in (2010) |
| September 16 | 91.9°F (2008) | 43.0°F (2021) | 0.20 in (2010) |
| September 17 | 91.9°F (2012) | 44.1°F (2018) | 0.56 in (2010) |
| September 18 | 86.0°F (2009) | 43.0°F (2018) | 1.00 in (2021) |
| September 19 | 84.9°F (2014) | 42.1°F (2018) | 1.04 in (2021) |
| September 20 | 93.9°F (2014) | 44.1°F (2016) | 0.39 in (2008) |
| September 21 | 93.0°F (2009) | 42.1°F (2009) | 0.12 in (2008) |
| September 22 | 93.9°F (2009) | 42.1°F (2017) | 0.12 in (2013) |
| September 23 | 93.0°F (2011) | 37.9°F (2008) | 0.47 in (2014) |
| September 24 | 91.0°F (2011) | 41.0°F (2018) | 0.81 in (2013) |
| September 25 | 84.9°F (2010) | 44.1°F (2018) | 0.07 in (2014) |
| September 26 | 91.9°F (2016) | 39.9°F (2012) | 0.26 in (2011) |
| September 27 | 89.1°F (2010) | 42.1°F (2009) | 0.93 in (2021) |
| September 28 | 88.0°F (2012) | 43.0°F (2008) | 1.59 in (2013) |
| September 29 | 87.1°F (2008) | 42.1°F (2016) | 1.71 in (2013) |
| September 30 | 82.0°F (2010) | 44.1°F (2012) | 0.43 in (2013) |