Portland
December
Weather in Portland for December 2025
Your guide to Portland weather in December - trends and predictions
With an average of 3 snowy days, Portland usually enjoys a light touch of snow in December.
In general, the average temperature in Portland at the beginning of December is 1.7 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 4 °F by the end of December.
Portland experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 282.1 mm.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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21
Dry days
7
Rainy days
3
Snow days
3°/-2°
Temperatures
19 km/h
Avg max wind
71 %
Avg humidity
Portland Weather December
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  2° | 2  1° | 3 2° | 4  3° | 5  5° | 6  0° | |
| 7 -1° | 8  6° | 9  2° | 10  2° | 11  12° | 12 11° | 13 0° |
| 14 0° | 15 0° | 16 4° | 17  8° | 18 4° | 19 7° | 20 -1° |
| 21 -1° | 22 -5° | 23 -4° | 24 0° | 25 0° | 26 3° | 27 3° |
| 28 2° | 29 4° | 30 9° | 31 7° |
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Temperatures trend during December in Portland
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 | Cloudy | 2° /-1° | 0 mm | 0 cm | |
| Dec. 2 | Partly cloudy | 1° /-3° | 0 mm | 0 cm | |
| Dec. 3 | Partly cloudy | 2° /-2° | 0 mm | 0 cm | |
| Dec. 4 | Overcast | 3° /-2° | 0 mm | 0 cm | |
| Dec. 5 | Heavy snow | 5° /0° | 44.2 mm | 4 cm | |
| Dec. 6 | Sunny | 0° /-4° | 0 mm | 0 cm | |
| Dec. 7 | Sunny | -1° /-6° | 0 mm | 0 cm | |
| Dec. 8 | Moderate or heavy snow showers | 6° /0° | 8.1 mm | 2.4 cm | |
| Dec. 9 | Moderate rain at times | 2° /0° | 10.2 mm | 6.3 cm | |
| Dec. 10 | Light rain | 2° /-1° | 28.4 mm | 0 cm | |
| Dec. 11 | Heavy rain | 12° /3° | 67.3 mm | 0 cm | |
| Dec. 12 | Sunny | 11° /0° | 20.8 mm | 0 cm | |
| Dec. 13 | Partly cloudy | 0° /-4° | 0 mm | 0 cm | |
| Dec. 14 | Sunny | 0° /-6° | 0 mm | 0 cm | |
| Dec. 15 | Sunny | 0° /-7° | 0 mm | 0 cm | |
| Dec. 16 | Overcast | 4° /-1° | 0 mm | 0 cm | |
| Dec. 17 | Moderate rain | 8° /4° | 24.8 mm | 0 cm | |
| Dec. 18 | Overcast | 4° /1° | 0 mm | 0 cm | |
| Dec. 19 | Moderate rain | 7° /0° | 37.3 mm | 0 cm | |
| Dec. 20 | Overcast | -1° /-3° | 0 mm | 0 cm | |
| Dec. 21 | Overcast | -1° /-4° | 0 mm | 0 cm | |
| Dec. 22 | Sunny | -5° /-10° | 0 mm | 0 cm | |
| Dec. 23 | Partly cloudy | -4° /-10° | 0 mm | 0 cm | |
| Dec. 24 | Overcast | 0° /-4° | 0 mm | 0 cm | |
| Dec. 25 | Overcast | 0° /-6° | 0 mm | 0 cm | |
| Dec. 26 | Cloudy | 3° /-4° | 0 mm | 0 cm | |
| Dec. 27 | Sunny | 3° /-4° | 0 mm | 0 cm | |
| Dec. 28 | Overcast | 2° /-2° | 0 mm | 0 cm | |
| Dec. 29 | Moderate rain at times | 4° /0° | 3.5 mm | 0 cm | |
| Dec. 30 | Moderate or heavy rain shower | 9° /4° | 37.6 mm | 0 cm | |
| Dec. 31 | Partly cloudy | 7° /3° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Portland 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 Portland forecast closer to your planned date for the most up-to-date weather information.
Portland in December - FAQ
What are the expected maximum and minimum temperatures in Portland during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Portland during December?
Significant rainfall exceeding 282.1 mm is expected in Portland during December, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Portland in December 2025?
Portland experiences an average snowfall of 12.69 cm during December, occurring over 3 days.
What are the typical wind conditions in Portland during December?
The average wind speed in Portland during December is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
Portland snow forecast December 2025
Track daily snowfall levels and discover Portland’s snowy potential this December ❄️
December rainfall patterns in Portland
Explore the daily rainfall trends and prepare for Portlands December weather 💧
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