Washington Weather in December
Average highs run from 44°F on December 1 to 37°F on December 31, and lows from 30°F to 23°F. Normal precipitation for the month is 4.62 in over about 12 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 40°F
- Average low
- 26°F
- Precipitation
- 4.62 in
- Snowfall
- 8.6 in
- Record high
- 64°FDec 2, 2014
- Record low
- 0°FDec 10, 2014
- Chance of a freeze
- 100%
- Daylight
- 9 h 23 min to 9 h 13 min
- Cloud cover
- 64%
- Humidity
- 87%
- Dew point
- 27°F
- Wind
- 5.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 44°F | 30°F | 62°F 2016 | 16°F 2013 | 36% | 11% |
| Dec 2 | 44°F | 30°F | 64°F 2014 | 23°F 2019 | 36% | 12% |
| Dec 3 | 44°F | 29°F | 51°F 2011 | 26°F 2011 | 37% | 12% |
| Dec 4 | 43°F | 29°F | 55°F 2012 | 22°F 2019 | 37% | 13% |
| Dec 5 | 43°F | 29°F | 55°F 2012 | 23°F 2014 | 37% | 13% |
| Dec 6 | 43°F | 29°F | 53°F 2011 | 23°F 2014 | 37% | 14% |
| Dec 7 | 42°F | 28°F | 57°F 2011 | 22°F 2019 | 37% | 14% |
| Dec 8 | 42°F | 28°F | 55°F 2011 | 13°F 2019 | 38% | 14% |
| Dec 9 | 42°F | 28°F | 49°F 2012 | 18°F 2014 | 38% | 15% |
| Dec 10 | 42°F | 28°F | 49°F 2015 | 0°F 2014 | 38% | 15% |
| Dec 11 | 41°F | 27°F | 59°F 2015 | 17°F 2013 | 38% | 15% |
| Dec 12 | 41°F | 27°F | 57°F 2015 | 17°F 2013 | 38% | 16% |
| Dec 13 | 41°F | 27°F | 58°F 2015 | 10°F 2013 | 38% | 16% |
| Dec 14 | 40°F | 27°F | 62°F 2015 | 17°F 2013 | 38% | 16% |
| Dec 15 | 40°F | 26°F | 61°F 2015 | 15°F 2013 | 38% | 17% |
| Dec 16 | 40°F | 26°F | 54°F 2011 | 9°F 2016 | 39% | 17% |
| Dec 17 | 40°F | 26°F | 50°F 2014 | 7°F 2013 | 39% | 17% |
| Dec 18 | 39°F | 26°F | 48°F 2015 | 12°F 2013 | 39% | 18% |
| Dec 19 | 39°F | 26°F | 51°F 2016 | 12°F 2019 | 39% | 18% |
| Dec 20 | 39°F | 25°F | 48°F 2012 | 9°F 2016 | 39% | 18% |
| Dec 21 | 39°F | 25°F | 62°F 2015 | 9°F 2016 | 39% | 19% |
| Dec 22 | 38°F | 25°F | 57°F 2013 | 15°F 2019 | 39% | 19% |
| Dec 23 | 38°F | 25°F | 63°F 2013 | 16°F 2019 | 39% | 19% |
| Dec 24 | 38°F | 24°F | 62°F 2019 | 20°F 2012 | 39% | 20% |
| Dec 25 | 38°F | 24°F | 54°F 2014 | 17°F 2013 | 39% | 20% |
| Dec 26 | 38°F | 24°F | 51°F 2014 | 16°F 2013 | 39% | 20% |
| Dec 27 | 37°F | 24°F | 54°F 2016 | 16°F 2013 | 39% | 21% |
| Dec 28 | 37°F | 23°F | 58°F 2016 | 16°F 2013 | 39% | 21% |
| Dec 29 | 37°F | 23°F | 47°F 2011 | 20°F 2011 | 39% | 21% |
| Dec 30 | 37°F | 23°F | 44°F 2019 | 20°F 2011 | 39% | 22% |
| Dec 31 | 37°F | 23°F | 51°F 2011 | 14°F 2012 | 40% | 22% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:01 AM, sunset 4:24 PM
- December 31
- sunrise 7:20 AM, sunset 4:33 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00061762 (Danbury), public domain. Records: NOAA GHCN-Daily, station USC00060128, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.