Seattle
December
Weather in Seattle for December 2024
Your guide to Seattle weather in December - trends and predictions
In general, the average temperature in Seattle at the beginning of December is 10.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 8.3 °F by the end of December.
Expect significant rainfall in Seattle during December, with an average of 18 rainy days.
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13
Dry days
18
Rainy days
0
Snow days
9°/3°
Temperatures
12 km/h
Avg max wind
87 %
Avg humidity
Seattle in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  9° | ||||||
| 2  9° | 3 13° | 4 13° | 5 13° | 6 9° | 7  7° | 8 7° |
| 9 5° | 10 8° | 11  8° | 12  8° | 13  8° | 14  7° | 15  10° |
| 16 9° | 17  9° | 18 9° | 19 7° | 20 11° | 21 10° | 22 1° |
| 23  5° | 24 5° | 25 6° | 26 11° | 27  8° | 28 8° | 29 7° |
| 30 9° | 31 9° |
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Temperatures trend during December in Seattle
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 | Moderate or heavy rain with thunder | 9° /3° | 6.1 mm | 0 cm | |
| Dec. 2 | Moderate rain | 9° /6° | 12 mm | 0 cm | |
| Dec. 3 | Moderate rain | 13° /5° | 6.7 mm | 0 cm | |
| Dec. 4 | Moderate rain | 13° /5° | 18.6 mm | 0 cm | |
| Dec. 5 | Moderate rain | 13° /8° | 49.7 mm | 0 cm | |
| Dec. 6 | Moderate rain | 9° /6° | 22.7 mm | 0 cm | |
| Dec. 7 | Light rain shower | 7° /4° | 15.8 mm | 0 cm | |
| Dec. 8 | Patchy rain possible | 7° /2° | 0.2 mm | 0 cm | |
| Dec. 9 | Moderate rain | 5° /0° | 19.9 mm | 0 cm | |
| Dec. 10 | Moderate or heavy rain with thunder | 8° /3° | 8.3 mm | 0 cm | |
| Dec. 11 | Fog | 8° /6° | 0.3 mm | 0 cm | |
| Dec. 12 | Partly cloudy | 8° /2° | 0 mm | 0 cm | |
| Dec. 13 | Cloudy | 8° /1° | 0.2 mm | 0 cm | |
| Dec. 14 | Light rain | 7° /4° | 3.5 mm | 0 cm | |
| Dec. 15 | Overcast | 10° /4° | 0 mm | 0 cm | |
| Dec. 16 | Overcast | 9° /2° | 0 mm | 0 cm | |
| Dec. 17 | Sunny | 9° /2° | 0 mm | 0 cm | |
| Dec. 18 | Overcast | 9° /3° | 0 mm | 0 cm | |
| Dec. 19 | Light rain | 7° /6° | 9.2 mm | 0 cm | |
| Dec. 20 | Sunny | 11° /4° | 0 mm | 0 cm | |
| Dec. 21 | Overcast | 10° /4° | 0 mm | 0 cm | |
| Dec. 22 | Overcast | 1° /-3° | 3.2 mm | 0 cm | |
| Dec. 23 | Moderate or heavy rain shower | 5° /-4° | 9.4 mm | 5.1 cm | |
| Dec. 24 | Moderate or heavy rain shower | 5° /1° | 13.2 mm | 0 cm | |
| Dec. 25 | Patchy rain possible | 6° /2° | 14.6 mm | 0 cm | |
| Dec. 26 | Moderate or heavy rain shower | 11° /5° | 21.4 mm | 0 cm | |
| Dec. 27 | Heavy rain at times | 8° /5° | 10.8 mm | 0 cm | |
| Dec. 28 | Patchy rain possible | 8° /3° | 1.8 mm | 0 cm | |
| Dec. 29 | Patchy rain possible | 7° /3° | 2.1 mm | 0 cm | |
| Dec. 30 | Moderate rain at times | 9° /4° | 8.5 mm | 0 cm | |
| Dec. 31 | Moderate rain at times | 9° /3° | 2.7 mm | 0 cm | |
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Important Notice
Our weather forecast for Seattle 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 Seattle forecast closer to your planned date for the most up-to-date weather information.
Seattle in December - FAQ
What are the expected maximum and minimum temperatures in Seattle during December?
Prepare for cooler days with highs just around 9° and colder nights, dipping below 3°.
How much rainfall should be expected in Seattle during December?
Significant rainfall exceeding 348.5 mm is expected in Seattle during December, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
Is snowfall common in Seattle during December?
Seattle experiences an average snowfall of 10.3 cm during December, occurring over 0 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Seattle during December?
The average wind speed in Seattle during December is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Seattle
Explore the daily rainfall trends and prepare for Seattles December weather 💧
December snowfall in Seattle
Track daily snowfall levels and discover Seattle’s snowy potential this December ❄️
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