Portland weather
Our guide to the weather in Portland during January
We've looked at the most up-to-date weather data for Portland, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Portland weather in January.
What's the temperature like in Portland during January?
The temperature reaches around 8℃ during the daytime in January, falling away to 2℃ at night. The UV index will be low at this time of year, so not something to worry about. However, if you're going to be outside for long periods it's always a good idea to apply a small amount of sunscreen to exposed skin.
Does it snow in Portland during January?
Possibly. There's a chance of snow during January but not as much as you might think. Check the local forecast before you leave home so that you can pack appropriate footwear and clothing.
Does it rain in Portland during January?
January is typically the wettest month in Portland. On average, there will be 13 rainy days during the month, amounting to 235.2mm in total. That's a lot of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Portland during January?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in January. With cool air temperatures, any breeze will feel cold.
Weather in Portland
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