Portland

Portland Weather: Brace for Showers and Possible Thunderstorms, NWS Advises

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Published on March 18, 2025
Portland Weather: Brace for Showers and Possible Thunderstorms, NWS AdvisesSource: Google Street View

Portlanders might want to hold off on stowing away their umbrellas just yet. The National Weather Service's Portland bureau reports an overcast sky with a current temperature of 43°F, a dewpoint of 37°F, and visibility standing at 10 miles. With humidity hovering at 81% and a south wind blowing at a mild 3 to 7 mph, the city is bracing for more showers throughout the day. "A 50 percent chance of showers, mainly between 8am and 5pm," according to a detailed forecast provided by the NWS, with new precipitation amounts of less than a tenth of an inch possible.

The snow level, resting at 1900 feet early in the day, is set to rise to 2900 feet by the afternoon, providing a slight respite for lower elevation areas. Temperatures tonight are expected to dip to around 40°F, under mostly cloudy skies and a southeast wind of 3 to 6 mph. Missing the snow line by climbing to 2900 feet, those at higher altitudes may find themselves dealing with wintery conditions notwithstanding the overwhelmingly rainy outlook.

Looking ahead, Wednesday is slated for rain likely after 11am with a high near 54°F and continued east wind conditions. "Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible," the forecast states. The downpour is anticipated to be ceaseless into Wednesday night, pushing the precipitation chances up to 100%, accompanied by gusts as high as 22 mph, and rainfall forecasted between a quarter and half of an inch.

As the week progresses, the story remains much the same: 100% chance of rain on Thursday, with gusts picking up to as high as 18 mph and daytime temperatures peaking near 51°F. Night brings more rain and maintains the steady streak of precipitation throughout the end of the week. Forecasted heavy rain on Friday seems poised to usher in possible thunderstorms by evening, "before 11pm, then rain likely after 11pm," and temperatures hanging around the 40°F mark hinting that the region is locked in a wet pattern. Spring in Portland appears to be saluted with unyielding showers with only brief intermissions; the weekend forecast suggests a continuation of rainy conditions, a scenario all too familiar to the locals, as noted by NWS. Come Monday, there's a touch of hope with a "chance of rain" and partly sunny skies, potentially marking a shift towards the warmer, dryer spring weather Portlanders are eagerly awaiting.