December weather in Monroe, OR
The average temperature in Monroe in December is 39.9°F (34.2°F–45.7°F). Average precipitation: 7.98 inches.
December is a winter month in Monroe, and is cooler than the annual average of 52.2°F. Daily temperatures swing about 11.5°F between overnight low and afternoon high. Expect about 19 days with precipitation. Daylight averages about 8h 41m. For travel, December is a wet month.
Avg High
45.7°F
Avg Low
34.2°F
Precipitation
7.98 in
Daylight
8h 41m
December records in Monroe
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.6°F (2021) | 26.6°F (2024) | 0.72 in (2007) |
| December 2 | 56.3°F (2008) | 25.9°F (2009) | 1.89 in (2007) |
| December 3 | 57.6°F (2023) | 24.3°F (2009) | 2.69 in (2007) |
| December 4 | 61.9°F (2023) | 20.7°F (2013) | 0.76 in (2014) |
| December 5 | 62.2°F (2023) | 15.6°F (2013) | 0.48 in (2025) |
| December 6 | 57.2°F (2017) | 22.3°F (2013) | 1.08 in (2023) |
| December 7 | 61.9°F (2015) | 9.0°F (2013) | 1.64 in (2015) |
| December 8 | 61.3°F (2015) | 4.5°F (2013) | 0.81 in (2010) |
| December 9 | 60.6°F (2014) | 6.3°F (2013) | 1.62 in (2025) |
| December 10 | 62.8°F (2025) | 9.1°F (2009) | 1.09 in (2015) |
| December 11 | 61.5°F (2025) | 11.8°F (2009) | 1.24 in (2021) |
| December 12 | 59.9°F (2010) | 15.4°F (2013) | 1.21 in (2015) |
| December 13 | 58.1°F (2006) | 22.3°F (2011) | 0.73 in (2006) |
| December 14 | 58.6°F (2018) | 23.5°F (2011) | 1.59 in (2006) |
| December 15 | 61.2°F (2025) | 19.2°F (2008) | 1.41 in (2009) |
| December 16 | 59.5°F (2025) | 11.1°F (2008) | 0.91 in (2012) |
| December 17 | 60.1°F (2025) | 9.9°F (2008) | 2.50 in (2015) |
| December 18 | 59.4°F (2024) | 27.0°F (2019) | 3.25 in (2025) |
| December 19 | 57.9°F (2009) | 27.1°F (2008) | 2.13 in (2021) |
| December 20 | 57.9°F (2014) | 29.1°F (2017) | 2.37 in (2020) |
| December 21 | 59.0°F (2020) | 26.4°F (2017) | 1.09 in (2015) |
| December 22 | 56.5°F (2013) | 22.6°F (2022) | 0.54 in (2021) |
| December 23 | 57.2°F (2014) | 23.2°F (2022) | 1.15 in (2007) |
| December 24 | 53.6°F (2014) | 27.7°F (2016) | 0.94 in (2014) |
| December 25 | 60.6°F (2022) | 23.4°F (2016) | 0.78 in (2024) |
| December 26 | 59.2°F (2022) | 24.3°F (2016) | 1.37 in (2006) |
| December 27 | 55.2°F (2022) | 25.0°F (2021) | 1.40 in (2022) |
| December 28 | 56.5°F (2011) | 25.3°F (2009) | 1.91 in (2011) |
| December 29 | 54.3°F (2017) | 25.5°F (2020) | 1.31 in (2011) |
| December 30 | 53.2°F (2011) | 21.0°F (2014) | 1.16 in (2011) |
| December 31 | 52.5°F (2009) | 18.1°F (2014) | 1.28 in (2009) |