Washington (Seattle)
December
Weather in Washington for December 2026
Your guide to Washington weather in December - trends and predictions
With an average of 2 snowy days, Washington usually enjoys a light touch of snow in December.
In general, the average temperature in Washington at the beginning of December is 6.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 5.8 °C by the end of December.
Washington in December brings notable rainfall, with an average of 18 rainy days and a total precipitation of 254.8 mm.
Is December a good time to visit Washington? check out the best time to travel to Washington page.
✨ Is December a good time to visit Washington? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
Rain 🌧️
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11
Dry days
18
Rainy days
2
Snow days
7°/3°
Temperatures
14 km/h
Avg max wind
87 %
Avg humidity
Washington Weather December
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What’s the Weather Like in Washington This December?
Discover the average temperatures and weather trends across Washington’s cities this December.
Temperatures trend during December in Washington
See the weather trend as well as the moving average line
December weather in Washington day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Light rain | 6° /1° | 2.8 mm | 0 cm | |
| Dec. 2 |  Heavy rain at times | 6° /2° | 5.1 mm | 0.3 cm | |
| Dec. 3 | Light rain | 6° /1° | 2.5 mm | 0.8 cm | |
| Dec. 4 |  Moderate rain | 6° /0° | 13.2 mm | 0 cm | |
| Dec. 5 | Moderate rain | 7° /2° | 12.5 mm | 0 cm | |
| Dec. 6 | Light rain | 7° /5° | 6.2 mm | 0 cm | |
| Dec. 7 | Moderate rain | 8° /5° | 12.5 mm | 0 cm | |
| Dec. 8 | Heavy rain at times | 9° /4° | 10.4 mm | 0 cm | |
| Dec. 9 | Moderate rain | 6° /3° | 14.8 mm | 0 cm | |
| Dec. 10 | Moderate rain | 7° /2° | 12.3 mm | 0 cm | |
| Dec. 11 |  Moderate or heavy rain shower | 8° /4° | 5.9 mm | 0 cm | |
| Dec. 12 |  Mist | 7° /3° | 0.8 mm | 0 cm | |
| Dec. 13 | Light rain | 7° /3° | 4.3 mm | 0 cm | |
| Dec. 14 | Light rain | 7° /4° | 3.2 mm | 0 cm | |
| Dec. 15 | Light rain | 8° /3° | 3.1 mm | 0 cm | |
| Dec. 16 | Light rain | 7° /3° | 8.2 mm | 0 cm | |
| Dec. 17 | Light rain | 8° /3° | 5.9 mm | 0 cm | |
| Dec. 18 | Moderate rain | 8° /4° | 13.2 mm | 0.2 cm | |
| Dec. 19 | Moderate or heavy rain shower | 6° /3° | 9.4 mm | 0 cm | |
| Dec. 20 | Light rain | 7° /4° | 3.4 mm | 0.3 cm | |
| Dec. 21 | Moderate rain | 6° /2° | 16.7 mm | 0.1 cm | |
| Dec. 22 | Moderate or heavy rain shower | 5° /2° | 8.3 mm | 0 cm | |
| Dec. 23 |  Light snow | 6° /1° | 5.6 mm | 1.7 cm | |
| Dec. 24 | Moderate rain | 7° /2° | 10 mm | 0 cm | |
| Dec. 25 | Moderate rain | 6° /3° | 13.9 mm | 0.1 cm | |
| Dec. 26 | Moderate rain | 7° /3° | 23.4 mm | 1.8 cm | |
| Dec. 27 | Moderate rain at times | 5° /2° | 7.4 mm | 0 cm | |
| Dec. 28 |  Patchy rain possible | 6° /1° | 2 mm | 0 cm | |
| Dec. 29 | Light rain | 5° /1° | 7.5 mm | 0 cm | |
| Dec. 30 | Moderate or heavy rain shower | 6° /2° | 7.7 mm | 0.6 cm | |
| Dec. 31 | Light rain | 6° /1° | 2.6 mm | 0 cm | |
| Next | |||||
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.
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Washington in December - FAQ
What are the expected maximum and minimum temperatures in Washington during December?
Prepare for cooler days with highs just around 7° and colder nights, dipping below 3°.
How much rainfall should be expected in Washington during December?
Significant rainfall exceeding 254.8 mm is expected in Washington during December, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Washington in December 2026?
Washington experiences an average snowfall of 4.8 cm during December, occurring over 2 days.
What are the typical wind conditions in Washington during December?
The average wind speed in Washington during December is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
Washington snow forecast December 2026
Track daily snowfall levels and discover Washington’s snowy potential this December ❄️
On average, Washington sees 2 snowy days during December, with approximately 4.8 cm of total snowfall.
December rainfall patterns in Washington
Explore the daily rainfall trends and prepare for Washingtons December weather 💧
Typically, Washington has 18 rainy days in December with a total of 254.8 mm of rainfall.
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