Oregon – Bright sunshine is quickly warming Portland this afternoon, but a sharp temperature drop is lining up tonight that could catch early commuters off guard.
According to the National Weather Service, temperatures climb to near 78°F today under mostly sunny skies, with light winds around 6 mph developing this afternoon. Clear conditions will allow temperatures to fall quickly tonight, reaching near 44°F and dropping further to around 39°F by early Tuesday.
Across Portland, Beaverton, and Gresham, the warm afternoon will feel almost like early summer, but that warmth fades fast after sunset. Cooler air settles into the Willamette Valley overnight, especially in low-lying areas. Early morning drivers may notice a crisp chill on bridges like I-205 and I-5 crossings, though roads remain dry.
Tuesday brings a noticeable cooldown with highs near 62°F under sunny skies. By Wednesday, temperatures rebound slightly to around 66°F with mostly sunny conditions. The pattern stays dry and stable through midweek, offering comfortable spring weather with cool mornings and mild afternoons.
A warmer push returns Thursday, with highs near 71°F and continued sunshine. However, changes begin to develop by the weekend, with increasing clouds and a chance of rain arriving by Saturday, potentially impacting outdoor plans.
Enjoy the warm stretch while it lasts, and prepare for cooler mornings ahead. Are you noticing that temperature swing where you are today?
Five Day Forecast for Portland, OR
- Today: Mostly sunny, high near 78°F
- Tonight: Partly cloudy, low around 44°F
- Tuesday: Sunny, high near 62°F
- Wednesday: Mostly sunny, high near 66°F
- Thursday: Sunny, high near 71°F
