Seattle, Washington – Cooler, damp conditions will settle across Washington by Thursday, bringing a return to below-normal temperatures and steady rain that could impact travel and outdoor plans.
According to the National Weather Service and NOAA’s Climate Prediction Center, much of Washington is in a 40 to 50 percent probability zone for below-normal temperatures from April 16 through April 20. A broad trough along the West Coast will drive cooler air inland while increasing moisture across the region.
In Seattle and across King, Pierce, and Snohomish counties, highs are expected to range from 55 to 62°F during the afternoon hours, with overnight lows in the mid-40s. Periods of rain will develop, especially during the morning and evening hours, leading to slick road conditions along I-5 and surrounding highways.
Farther south, Olympia and Tacoma will see similar temperatures with steady rain at times, while Bellingham and northwest Washington may remain slightly cooler with more persistent cloud cover. In eastern Washington, including Spokane, highs will reach the low to mid-60s with a mix of clouds and scattered showers.
The precipitation outlook shows a 40 to 50 percent chance of above-normal rainfall during this period, with mountain areas including the Cascades likely to see late-season snow at higher elevations.
Residents should prepare for wet roads, reduced visibility, and cooler conditions. Drivers should allow extra travel time, especially during periods of steady rain.
The cooler, unsettled pattern is expected to continue through April 20, with additional advisories possible as systems move through the Pacific Northwest into early next week.
