Portland, Oregon – Heavy rain and possible thunderstorms will move into Portland by mid-morning Saturday, with a 90% chance of precipitation disrupting weekend plans across northwest Oregon. Drivers should prepare for slick conditions along I-5 and I-84, especially between 11 a.m. and 7 p.m. Saturday as showers intensify.
According to the National Weather Service, rainfall begins late Friday night but peaks Saturday after 11 a.m. as a low-pressure system pushes into the region. Thunderstorm activity could bring brief downpours, with isolated spots picking up over a quarter inch. Wind gusts up to 8 mph are expected by afternoon, shifting west-northwest.
Cities including Gresham, Beaverton, and Hillsboro will also see steady rain through Saturday night. Localized pooling on roadways and reduced visibility are concerns during any thunderstorm bursts. Rain chances taper by early Sunday morning, giving way to partly sunny skies and a high near 63°F.
Monday brings another wave of showers, with a 60% chance of rain after 11 a.m. Conditions dry out midweek with highs reaching 69°F by Wednesday and mostly sunny skies continuing through Thursday.
5-Day Outlook for Portland, OR:
- Saturday: Rain, possible thunderstorms, high near 64°F
- Sunday: Drying out, partly sunny, high 63°F
- Monday: Showers likely, high 64°F
- Tuesday: Mostly sunny, high near 67°F
- Wednesday: Clear and mild, high around 69°F
