Coos Bay (OR)
December
Weather in Coos Bay, Oregon for December 2025
Your guide to Coos Bay weather in December - trends and predictions
In general, the average temperature in Coos Bay at the beginning of December is 12.1 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 9.9 °F by the end of December.
Coos Bay in December brings notable rainfall, with an average of 20 rainy days and a total precipitation of 718.6 mm.
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Temperatures
Rain 🌧️
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11
Dry days
20
Rainy days
0
Snow days
11°/7°
Temperatures
23 km/h
Avg max wind
83 %
Avg humidity
Coos Bay Weather December
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Temperatures trend during December in Coos Bay
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December weather in Coos Bay day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Partly cloudy | 12° /2° | 0 mm | 4 | |
| Dec. 2 | Partly cloudy | 12° /4° | 0 mm | 4 | |
| Dec. 3 |  Cloudy | 13° /3° | 0 mm | 3 | |
| Dec. 4 |  Overcast | 12° /4° | 0 mm | 3 | |
| Dec. 5 |  Patchy rain possible | 13° /6° | 0.2 mm | 3 | |
| Dec. 6 | Cloudy | 12° /7° | 0 mm | 3 | |
| Dec. 7 |  Moderate or heavy rain shower | 11° /8° | 33.9 mm | 3 | |
| Dec. 8 | Moderate rain at times | 9° /6° | 0.9 mm | 2 | |
| Dec. 9 |  Sunny | 11° /4° | 0 mm | 4 | |
| Dec. 10 | Overcast | 12° /5° | 0 mm | 3 | |
| Dec. 11 | Moderate or heavy rain shower | 12° /7° | 8.8 mm | 3 | |
| Dec. 12 | Patchy rain possible | 10° /7° | 5.6 mm | 3 | |
| Dec. 13 | Moderate or heavy rain shower | 10° /7° | 37.7 mm | 3 | |
| Dec. 14 | Moderate or heavy rain shower | 9° /5° | 52.4 mm | 2 | |
| Dec. 15 | Moderate or heavy rain shower | 10° /6° | 14.3 mm | 3 | |
| Dec. 16 | Moderate or heavy rain shower | 10° /7° | 41.7 mm | 2 | |
| Dec. 17 | Moderate or heavy rain shower | 13° /10° | 40.8 mm | 3 | |
| Dec. 18 | Moderate or heavy rain shower | 14° /10° | 17.9 mm | 3 | |
| Dec. 19 | Overcast | 15° /10° | 0 mm | 4 | |
| Dec. 20 | Overcast | 15° /11° | 0 mm | 4 | |
| Dec. 21 | Moderate or heavy rain shower | 13° /9° | 45.3 mm | 3 | |
| Dec. 22 | Moderate or heavy rain shower | 13° /10° | 27.4 mm | 3 | |
| Dec. 23 | Moderate or heavy rain shower | 13° /8° | 31.1 mm | 3 | |
| Dec. 24 | Moderate or heavy rain shower | 10° /7° | 16.8 mm | 3 | |
| Dec. 25 | Moderate or heavy rain shower | 10° /6° | 26.5 mm | 3 | |
| Dec. 26 | Moderate or heavy rain shower | 11° /10° | 64.6 mm | 3 | |
| Dec. 27 | Moderate or heavy rain shower | 12° /8° | 46.9 mm | 3 | |
| Dec. 28 | Moderate or heavy rain shower | 11° /9° | 55.9 mm | 3 | |
| Dec. 29 | Moderate or heavy rain shower | 10° /7° | 130.2 mm | 3 | |
| Dec. 30 |  Heavy rain at times | 8° /6° | 11.8 mm | 2 | |
| Dec. 31 | Heavy rain at times | 7° /5° | 7.9 mm | 2 | |
| Next | |||||
Important Notice
Our weather forecast for Coos Bay 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 Coos Bay forecast closer to your planned date for the most up-to-date weather information.
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Coos Bay in December - FAQ
What are the expected maximum and minimum temperatures in Coos Bay during December?
During December, expect a variety of temperatures with highs around 11° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Coos Bay during December?
Significant rainfall exceeding 718.6 mm is expected in Coos Bay during December, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Coos Bay during December?
The average wind speed in Coos Bay during December is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Coos Bay
Explore the daily rainfall trends and prepare for Coos Bays December weather 💧
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