Portland weather
Loading live data…Drizzle,rain likely tomorrow
NWS, the American and the European model agree on a high near 69° in Portland today. Tomorrow looks light drizzle around 67°, with a 71% chance of rain.
The weather map: all three models at once
NWS, American, European side by side around Portland and nearby towns.Live rain radar →Next 14 hours
consensus of the three models14-day forecast
where the models agree, and where they splitPortland, OR. Below we compare what NWS, American, European forecast for Portland right now and flag exactly where they disagree, then break down Portland's weather month by month and which forecast model has been most accurate here.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.
Portland weather by month
what to expect in Portland through the yearHere is Portland's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Portland by season.
What Portland's weather is like through the year
Portland runs from warm summers, with July highs near 86°F, to cold winters, when January lows sit around 35°F (a swing of about 51°F across the year). December is usually the wettest month, and Portland sees roughly 59 inches of precipitation annually.
Best time to visit Portland
The most comfortable time to visit Portland is usually May, June, September and October, when daytime highs sit in the pleasant 60-78°F range and the heaviest December rain is behind you.
Which forecast is most accurate in Portland?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Portland, scoring 92/100 on our CheckWeather Score, ahead of the American at 83. See the full US accuracy scoreboard for exactly how every model is tested.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.