Weather in Seattle: Storm Threat Brings Heavy Rain, Strong Winds & Possible Snow – What You Need to Know

Sunday opens on a crisp note in Seattle with partly sunny skies and a 9 a.m. temperature of 41 °F, while humidity lingers near 70 percent and winds remain light out of the northeast. Overnight lows fell to a frosty 27 °F, leaving patches of black ice on untreated neighborhood streets—use caution on early-morning commutes. Short-Range Outlook • Monday ushers in a modest warm-up to 45 °F before clouds thicken late day. • By Tuesday, highs flirt with 48 °F as a weak Pacific disturbance slides ashore, nudging rain chances to 30 percent. • A wetter pattern arrives Wednesday night into Thursday; models project daytime highs near 50 °F with showers turning steadier by Thursday morning. Weekend Preview Storm energy retreats Friday into Saturday, letting highs climb into the low-50s while spotty drizzle hangs on. Dry breaks should increase late Saturday, offering a window for waterfront walks or ferry trips across Puget Sound. January in Context This week’s chill follows several colder-than-average mornings; January norms in the Emerald City typically hover around 47 °F for daytime highs and 38 °F for lows. The National Weather Service notes that the current cold snap is expected to ease without significant snow potential at sea level, though the Cascades will collect fresh powder—good news for skiers planning a Snoqualmie or Stevens Pass run. Travel & Commute Tips • Black ice: Side streets and elevated roadways remain slick at dawn through midweek—reduce speeds and allow extra braking distance. • Ferries: Breezy southerlies of 10–15 mph Thursday could spur minor delays for Bainbridge and Bremerton routes. • Mountain passes: Expect chain requirements late Wednesday night as snow levels dip to 2,500 ft before climbing above the passes on Friday. What’s Next? A milder, showery pattern is forecast to persist into early February, keeping reservoirs and ski slopes replenished while sparing Seattle the heaviest atmospheric-river events that often trigger urban flooding. Keep umbrellas at the ready, but also watch for sun-breaks that bring brilliant winter sunsets over the Olympics. Stay tuned to updated Seattle weather forecasts throughout the week on AccuWeather and the National Weather Service for real-time radar, wind advisories, and any late-breaking storm watches.