Clatsop County (Astoria)
December
Weather in Clatsop County, Oregon for December 2026
Your guide to Clatsop County weather in December - trends and predictions
In general, the average temperature in Clatsop County at the beginning of December is 9.4 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 8.7 °C by the end of December.
Clatsop County experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 890.1 mm.
Is December a good time to visit Clatsop County? check out the best time to travel to Clatsop County page.
✨ Is December a good time to visit Clatsop County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
8
Dry days
23
Rainy days
0
Snow days
9°/7°
Temperatures
24 km/h
Avg max wind
85 %
Avg humidity
Clatsop County Weather December
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Temperatures trend during December in Clatsop County
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December weather in Clatsop County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 8° /4° | 0 mm | 1.1 | |
| Dec. 2 |  Light rain | 9° /6° | 3.2 mm | 1.1 | |
| Dec. 3 |  Fog | 9° /3° | 0 mm | 1.1 | |
| Dec. 4 | Light rain | 10° /6° | 9.9 mm | 1.1 | |
| Dec. 5 |  Heavy rain at times | 10° /8° | 36.4 mm | 1.1 | |
| Dec. 6 | Light rain | 10° /8° | 4 mm | 1.1 | |
| Dec. 7 |  Heavy rain | 11° /9° | 40.2 mm | 1 | |
| Dec. 8 | Heavy rain | 10° /9° | 131.1 mm | 1 | |
| Dec. 9 | Heavy rain | 10° /7° | 70.8 mm | 1 | |
| Dec. 10 | Heavy rain | 10° /7° | 145.4 mm | 1 | |
| Dec. 11 |  Moderate rain | 10° /8° | 22 mm | 1 | |
| Dec. 12 | Light rain | 10° /9° | 4.1 mm | 1 | |
| Dec. 13 |  Patchy rain possible | 10° /9° | 1.2 mm | 1 | |
| Dec. 14 | Moderate rain | 10° /9° | 11.4 mm | 1 | |
| Dec. 15 | Moderate rain | 10° /9° | 17.8 mm | 1 | |
| Dec. 16 | Moderate rain | 10° /8° | 20.5 mm | 1 | |
| Dec. 17 | Heavy rain | 10° /8° | 41 mm | 1 | |
| Dec. 18 | Heavy rain | 11° /7° | 63.6 mm | 1 | |
| Dec. 19 | Heavy rain | 10° /8° | 26.6 mm | 1 | |
| Dec. 20 | Moderate rain | 10° /9° | 13.4 mm | 1 | |
| Dec. 21 | Heavy rain | 10° /8° | 31.5 mm | 1 | |
| Dec. 22 | Heavy rain | 9° /8° | 44.9 mm | 1 | |
| Dec. 23 | Heavy rain at times | 9° /7° | 18.8 mm | 1 | |
| Dec. 24 | Moderate rain | 10° /7° | 21.8 mm | 1 | |
| Dec. 25 | Moderate rain | 9° /7° | 18.2 mm | 1 | |
| Dec. 26 | Heavy rain | 9° /8° | 40.7 mm | 1 | |
| Dec. 27 | Heavy rain | 8° /6° | 27.6 mm | 1 | |
| Dec. 28 | Light rain | 9° /8° | 7.5 mm | 1 | |
| Dec. 29 | Moderate rain | 9° /7° | 11.9 mm | 1 | |
| Dec. 30 | Light rain | 9° /7° | 4.7 mm | 1 | |
| Dec. 31 |  Overcast | 8° /5° | 0 mm | 1 | |
| Next | |||||
Important Notice
Our weather forecast for Clatsop County 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 Clatsop County forecast closer to your planned date for the most up-to-date weather information.
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Clatsop County in December - FAQ
What are the expected maximum and minimum temperatures in Clatsop County during December?
During December, expect a variety of temperatures with highs around 9° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Clatsop County during December?
Significant rainfall exceeding 890.1 mm is expected in Clatsop County during December, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Clatsop County in December 2026?
Clatsop County typically sees 0 cm of snowfall during December.
What are the typical wind conditions in Clatsop County during December?
The average wind speed in Clatsop County during December is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Clatsop County
Explore the daily rainfall trends and prepare for Clatsop Countys December weather 💧
Typically, Clatsop County has 23 rainy days in December with a total of 890.1 mm of rainfall.
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