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The weather in Portland in January is very cold with temperatures between 2°C and 8°C, warm clothes are a must.
You can expect rain for roughly half of the month of January in Portland. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Portland can expect a few days of snow in January.
Our weather forecast can give you a great sense of what weather to expect in Portland in January 2025.
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 | 8° / 2° | 13 | 16 | 2 | 263 mm | Awful | Portland in January |
| February | 8° / 2° | 11 | 13 | 4 | 201 mm | Awful | Portland in February |
| March | 11° / 3° | 13 | 16 | 2 | 217 mm | Awful | Portland in March |
| April | 14° / 4° | 9 | 20 | 1 | 154 mm | Ok | Portland in April |
| May | 19° / 6° | 6 | 25 | 0 | 98 mm | Good | Portland in May |
| June | 22° / 9° | 4 | 26 | 0 | 84 mm | Good | Portland in June |
| July | 27° / 11° | 1 | 30 | 0 | 14 mm | Perfect | Portland in July |
| August | 27° / 12° | 1 | 30 | 0 | 20 mm | Perfect | Portland in August |
| September | 23° / 11° | 4 | 26 | 0 | 95 mm | Perfect | Portland in September |
| October | 16° / 8° | 9 | 22 | 0 | 201 mm | Ok | Portland in October |
| November | 10° / 4° | 13 | 17 | 1 | 222 mm | Bad | Portland in November |
| December | 7° / 1° | 12 | 17 | 2 | 261 mm | Awful | Portland in December |