Olympia (WA)
December
Weather in Olympia, Washington for December 2025
Your guide to Olympia weather in December - trends and predictions
In general, the average temperature in Olympia at the beginning of December is 6.3 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 7.4 °F by the end of December.
Olympia experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 279 mm.
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Temperatures
Rain 🌧️
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9
Dry days
22
Rainy days
0
Snow days
8°/4°
Temperatures
15 km/h
Avg max wind
87 %
Avg humidity
Olympia Weather December
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Temperatures trend during December in Olympia
See the weather trend as well as the moving average line
December weather in Olympia day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | 5° /1° | 0 mm | 2 | |
| Dec. 2 | Overcast | 3° /0° | 0 mm | 1 | |
| Dec. 3 | Overcast | 3° /-1° | 0 mm | 1 | |
| Dec. 4 | Overcast | 7° /-1° | 0 mm | 2 | |
| Dec. 5 | Overcast | 7° /2° | 0 mm | 2 | |
| Dec. 6 | Overcast | 9° /4° | 0 mm | 2 | |
| Dec. 7 |  Moderate or heavy rain shower | 10° /6° | 27.5 mm | 3 | |
| Dec. 8 | Moderate rain at times | 8° /6° | 7.6 mm | 2 | |
| Dec. 9 | Overcast | 7° /3° | 0 mm | 2 | |
| Dec. 10 |  Cloudy | 4° /1° | 0 mm | 1 | |
| Dec. 11 | Cloudy | 8° /0° | 0 mm | 2 | |
| Dec. 12 | Moderate rain at times | 6° /3° | 2.8 mm | 2 | |
| Dec. 13 |  Heavy rain at times | 8° /4° | 8.7 mm | 2 | |
| Dec. 14 | Heavy rain at times | 8° /5° | 9.5 mm | 2 | |
| Dec. 15 | Moderate or heavy rain shower | 6° /4° | 6.2 mm | 2 | |
| Dec. 16 | Heavy rain at times | 8° /3° | 12.6 mm | 2 | |
| Dec. 17 | Moderate or heavy rain shower | 10° /5° | 31.7 mm | 3 | |
| Dec. 18 | Moderate or heavy rain shower | 10° /6° | 27.2 mm | 3 | |
| Dec. 19 | Heavy rain at times | 11° /5° | 11.9 mm | 3 | |
| Dec. 20 |  Patchy rain possible | 11° /8° | 0.9 mm | 3 | |
| Dec. 21 | Moderate or heavy rain shower | 9° /7° | 6.5 mm | 2 | |
| Dec. 22 | Moderate or heavy rain shower | 10° /7° | 19.3 mm | 3 | |
| Dec. 23 | Overcast | 10° /8° | 8 mm | 3 | |
| Dec. 24 | Patchy rain possible | 9° /7° | 2.5 mm | 2 | |
| Dec. 25 | Moderate or heavy rain shower | 6° /5° | 26.2 mm | 2 | |
| Dec. 26 | Moderate or heavy rain shower | 9° /5° | 25.3 mm | 2 | |
| Dec. 27 | Heavy rain at times | 9° /6° | 18.1 mm | 2 | |
| Dec. 28 | Moderate rain at times | 9° /7° | 11 mm | 2 | |
| Dec. 29 | Heavy rain at times | 7° /5° | 10.1 mm | 2 | |
| Dec. 30 | Heavy rain at times | 6° /4° | 3.1 mm | 2 | |
| Dec. 31 | Overcast | 6° /3° | 2.2 mm | 2 | |
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Important Notice
Our weather forecast for Olympia 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 Olympia forecast closer to your planned date for the most up-to-date weather information.
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Olympia in December - FAQ
What are the expected maximum and minimum temperatures in Olympia during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 4°.
How much rainfall should be expected in Olympia during December?
Significant rainfall exceeding 279 mm is expected in Olympia during December, occurring over more than 22 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Olympia in December 2025?
Olympia typically sees 0 cm of snowfall during December.
What are the typical wind conditions in Olympia during December?
The average wind speed in Olympia during December is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Olympia
Explore the daily rainfall trends and prepare for Olympias December weather 💧
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