Washington (Seattle)
December
Weather in Washington for December 2025
Your guide to Washington weather in December - trends and predictions
Washington typically experiences moderate snowfall in December, with an average of 8 snowy days.
In general, the average temperature in Washington at the beginning of December is 6.9 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 6.4 °F by the end of December.
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Snow Forecast ❄️
Temperatures
More
0
Dry days
23
Rainy days
8
Snow days
6°/1°
Temperatures
13 km/h
Avg max wind
86 %
Avg humidity
Washington in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  7° | 2  7° | 3  6° | 4  6° | 5 7° | 6 7° | |
| 7 8° | 8 8° | 9 5° | 10 6° | 11 8° | 12  6° | 13 7° |
| 14 7° | 15 7° | 16 7° | 17 8° | 18 8° | 19 7° | 20 8° |
| 21 7° | 22 5° | 23  6° | 24 6° | 25 6° | 26 8° | 27 5° |
| 28 7° | 29 5° | 30 7° | 31 7° |
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Temperatures trend during December in Washington
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Patchy rain possible | 7° /1° | 3.1 mm | 0 cm | |
| Dec. 2 | Heavy rain at times | 7° /1° | 6.4 mm | 0.3 cm | |
| Dec. 3 | Overcast | 6° /0° | 3.1 mm | 1 cm | |
| Dec. 4 | Moderate rain at times | 6° /-1° | 7.1 mm | 0 cm | |
| Dec. 5 | Overcast | 7° /1° | 12.5 mm | 0 cm | |
| Dec. 6 | Heavy rain at times | 7° /3° | 7.8 mm | 0 cm | |
| Dec. 7 | Patchy rain possible | 8° /4° | 15.6 mm | 0 cm | |
| Dec. 8 | Heavy rain at times | 8° /3° | 4.6 mm | 0 cm | |
| Dec. 9 | Moderate rain at times | 5° /1° | 9.8 mm | 0 cm | |
| Dec. 10 | Moderate rain at times | 6° /0° | 7.2 mm | 0 cm | |
| Dec. 11 | Moderate or heavy rain shower | 8° /3° | 6.4 mm | 0 cm | |
| Dec. 12 | Cloudy | 6° /2° | 1 mm | 0 cm | |
| Dec. 13 | Heavy rain at times | 7° /1° | 5.2 mm | 0 cm | |
| Dec. 14 | Patchy rain possible | 7° /2° | 3.8 mm | 0 cm | |
| Dec. 15 | Overcast | 7° /2° | 2.8 mm | 0 cm | |
| Dec. 16 | Moderate or heavy rain shower | 7° /2° | 8.4 mm | 0 cm | |
| Dec. 17 | Moderate rain at times | 8° /2° | 3.1 mm | 0 cm | |
| Dec. 18 | Moderate or heavy rain shower | 8° /3° | 15.2 mm | 0.3 cm | |
| Dec. 19 | Moderate or heavy rain shower | 7° /3° | 10.4 mm | 0 cm | |
| Dec. 20 | Overcast | 8° /3° | 4.1 mm | 0.3 cm | |
| Dec. 21 | Overcast | 7° /1° | 13.8 mm | 0.1 cm | |
| Dec. 22 | Moderate or heavy rain shower | 5° /1° | 9.3 mm | 0 cm | |
| Dec. 23 | Partly cloudy | 6° /0° | 6.8 mm | 2.1 cm | |
| Dec. 24 | Moderate or heavy rain shower | 6° /1° | 9 mm | 0 cm | |
| Dec. 25 | Patchy rain possible | 6° /2° | 12 mm | 0.1 cm | |
| Dec. 26 | Moderate rain at times | 8° /2° | 21.1 mm | 0.9 cm | |
| Dec. 27 | Moderate rain at times | 5° /1° | 8.9 mm | 0 cm | |
| Dec. 28 | Patchy rain possible | 7° /1° | 2.4 mm | 0 cm | |
| Dec. 29 | Patchy rain possible | 5° /0° | 9 mm | 0 cm | |
| Dec. 30 | Moderate or heavy rain shower | 7° /2° | 9.2 mm | 0.7 cm | |
| Dec. 31 | Heavy rain at times | 7° /1° | 3.1 mm | 0 cm | |
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Important Notice
Our weather forecast for Washington in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Washington forecast closer to your planned date for the most up-to-date weather information.
Washington in December - FAQ
What are the expected maximum and minimum temperatures in Washington during December?
Prepare for cooler days with highs just around 6° and colder nights, dipping below 1°.
How much rainfall should be expected in Washington during December?
Significant rainfall exceeding 209.6 mm is expected in Washington during December, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Washington in December 2025?
Washington experiences an average snowfall of 6.9075 cm during December, occurring over 8 days.
What are the typical wind conditions in Washington during December?
The average wind speed in Washington during December is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
Washington snow forecast December 2025
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December rainfall patterns in Washington
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