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The weather in Portland in December is very cold with temperatures between -2°C and 3°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Portland during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
You can expect a few days of snow in Portland during December. It’s important to get out your snow boots and warm mittens to stay warm while you explore Portland.
Our weather forecast can give you a great sense of what weather to expect in Portland in December 2024.
If you’re planning to visit Portland in the near future, we highly recommend that you review the 14 day weather forecast for Portland before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -6° | 4 | 17 | 10 | 43 mm | Awful | Portland in January |
| February | 0° / -5° | 5 | 13 | 10 | 50 mm | Awful | Portland in February |
| March | 4° / -2° | 6 | 18 | 7 | 52 mm | Awful | Portland in March |
| April | 9° / 3° | 5 | 23 | 2 | 50 mm | Bad | Portland in April |
| May | 15° / 9° | 5 | 27 | 0 | 50 mm | Good | Portland in May |
| June | 19° / 13° | 4 | 26 | 0 | 60 mm | Good | Portland in June |
| July | 23° / 16° | 3 | 28 | 0 | 55 mm | Perfect | Portland in July |
| August | 23° / 17° | 3 | 28 | 0 | 53 mm | Perfect | Portland in August |
| September | 20° / 13° | 2 | 28 | 0 | 37 mm | Good | Portland in September |
| October | 14° / 9° | 5 | 26 | 0 | 60 mm | Good | Portland in October |
| November | 8° / 3° | 5 | 23 | 2 | 44 mm | Bad | Portland in November |
| December | 3° / -2° | 6 | 19 | 7 | 58 mm | Awful | Portland in December |