December weather in Lebanon, OR
The average temperature in Lebanon in December is 41.7°F (36.2°F–47.3°F). Average precipitation: inches.
December is a winter month in Lebanon, and is cooler than the annual average of 54.9°F. Daily temperatures swing about 11.1°F between overnight low and afternoon high. Daylight averages about 8h 39m. For travel, December is cool.
Avg High
47.3°F
Avg Low
36.2°F
Precipitation
in
Daylight
8h 39m
December records in Lebanon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.0°F (2021) | 30.0°F (2015) | 1.03 in (2013) |
| December 2 | 64.0°F (2021) | 26.1°F (2009) | 0.51 in (2015) |
| December 3 | 63.0°F (2015) | 25.0°F (2009) | 0.21 in (2015) |
| December 4 | 60.1°F (2012) | 19.0°F (2013) | 0.77 in (2012) |
| December 5 | 61.0°F (2015) | 16.0°F (2013) | 0.30 in (2014) |
| December 6 | 61.0°F (2014) | 23.0°F (2013) | 0.76 in (2015) |
| December 7 | 64.0°F (2015) | 9.0°F (2013) | 1.20 in (2015) |
| December 8 | 66.9°F (2015) | 3.9°F (2013) | 0.64 in (2010) |
| December 9 | 68.0°F (2014) | 8.1°F (2013) | 0.67 in (2010) |
| December 10 | 63.0°F (2014) | 10.0°F (2009) | 0.78 in (2010) |
| December 11 | 64.0°F (2014) | 12.9°F (2009) | 0.49 in (2009) |
| December 12 | 63.0°F (2010) | 16.0°F (2013) | 0.77 in (2015) |
| December 13 | 62.1°F (2010) | 21.9°F (2011) | 2.45 in (2021) |
| December 14 | 55.9°F (2010) | 26.1°F (2008) | 0.57 in (2009) |
| December 15 | 53.1°F (2009) | 21.0°F (2008) | 1.32 in (2009) |
| December 16 | 61.0°F (2009) | 15.1°F (2008) | 0.44 in (2018) |
| December 17 | 59.0°F (2015) | 19.0°F (2008) | 1.81 in (2015) |
| December 18 | 57.9°F (2014) | 30.0°F (2016) | 1.36 in (2018) |
| December 19 | 63.0°F (2009) | 28.0°F (2013) | 0.53 in (2017) |
| December 20 | 64.0°F (2009) | 30.0°F (2017) | 1.78 in (2014) |
| December 21 | 61.0°F (2014) | 21.0°F (2017) | 3.02 in (2021) |
| December 22 | 57.9°F (2014) | 28.0°F (2011) | 1.08 in (2015) |
| December 23 | 61.0°F (2014) | 28.0°F (2011) | 0.60 in (2018) |
| December 24 | 57.0°F (2010) | 28.9°F (2009) | 0.93 in (2014) |
| December 25 | 51.1°F (2011) | 26.1°F (2009) | 0.35 in (2010) |
| December 26 | 52.0°F (2014) | 26.1°F (2016) | 0.43 in (2010) |
| December 27 | 55.9°F (2011) | 28.0°F (2009) | 1.68 in (2011) |
| December 28 | 59.0°F (2011) | 30.0°F (2009) | 0.91 in (2008) |
| December 29 | 57.0°F (2011) | 30.9°F (2014) | 1.55 in (2011) |
| December 30 | 55.9°F (2009) | 23.0°F (2014) | 0.81 in (2009) |
| December 31 | 57.0°F (2009) | 18.0°F (2014) | 0.83 in (2008) |