Seattle

Seattle Braces for Rain-Heavy Week: National Weather Service Predicts Showers and Thunderstorms

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Published on October 18, 2025
Seattle Braces for Rain-Heavy Week: National Weather Service Predicts Showers and ThunderstormsSource: Another Believer, CC BY-SA 3.0, via Wikimedia Commons

The National Weather Service in Seattle has updated its forecast for the region, predicting a rain-heavy week, with today's calm weather giving way to a series of showers and potential thunderstorms - a stark reminder that the Emerald City's signature drizzle isn't going anywhere soon. Beginning this afternoon, rain is expected to start and continue into the night, bringing between a tenth and a quarter of an inch of new precipitation, according to the National Weather Service. The nearly 90% humidity this morning serves as a palpable prelude to the impending precipitation.

With wind speeds picking up this evening to 10 to 16 mph and gusts potentially reaching 20 mph, the steady downpour is anticipated to pile on between a quarter and half an inch of rain, ushering in a damp nighttime reprieve until showers resume around 3 am. Despite the assurance of 100% chance of precipitation on Sunday, including possible thunderstorms after 11 am, the showers might relent before giving way to a sporadic chance of rain persisting into early next week, as commutes and outdoor plans will invariably reckon with the wet forecast.

The typically fickle Seattle weather takes a decisive turn for the wetter, with showers likely Sunday night and a 70% chance of rain before 11 pm, meanwhile, the week begins with partly sunny skies on Monday though a 20% chance of showers before 11 am lingers, as corroborated by the NWS forecast. Conditions appear to be a break and then another resurgence of rainfall, with a 40% chance of showers Monday night and Tuesday, while the mercury hovers near the 60-degree mark.