Portland, OR – Wet weather will continue in Portland as rain moves in on St. Patrick’s Day, with snow expected in the mountains. Temperatures will remain cool as spring officially begins on Thursday, March 20.
According to the National Weather Service, Monday will bring rain throughout the day, mainly after 11 a.m., with highs reaching 52°F. Light winds will shift west in the afternoon, but new precipitation amounts will remain under a tenth of an inch. Snow levels will hover around 1,800 feet in the morning, rising to 2,500 feet by afternoon, bringing possible accumulation in higher elevations.
Monday night, rain will continue, with snow levels dropping to 1,700 feet after midnight. Southwest winds will pick up slightly, reaching 8 mph. Precipitation chances remain high at 80%.
Looking ahead, Tuesday will see continued rain, with a 70% chance of showers after 11 a.m. Highs will stay near 52°F, with mostly cloudy skies persisting through the evening. By midweek, scattered showers remain likely, keeping the region damp as spring arrives.
Thursday marks the official start of the new season, but the forecast stays cool and cloudy, with highs near 51°F. Rain will persist into Friday and Saturday, maintaining chilly conditions.
Drivers should prepare for slick roads, especially in higher elevations. Travelers using I-84 through the Cascades should expect reduced visibility and possible snowfall. Plan ahead for wet conditions and drive cautiously.




