Seattle is kicking off Sunday, May 17 with morning clouds burning off to a gorgeous mostly sunny afternoon — highs near 63°F, winds barely a whisper, and essentially zero chance of rain. This is the kind of May day that makes the whole city step outside.
Today’s Setup
The National Weather Service says an upper-level ridge is building offshore today, locking in calm, dry conditions across Western Washington. Patchy fog in the South Sound near Tacoma will clear by late morning. By afternoon, expect mostly sunny skies, light west-southwest winds around 3 mph, and that comfortable 63°F high — all of it holding through tonight. Check the Seattle weather forecast for the full week, but the short story is: the weather roller coaster is parked for a while.
Best Window To Be Outside
Your prime outdoor window is roughly 11 AM to 5 PM. Green Lake, Discovery Park, and the Burke-Gilman Trail will all be ideal. If you’ve been putting off a tee time, this is your day — outdoor gear deals are worth a look, including Men’s Golf Shorts on Amazon for just $14.85 (50% off this week).
Allergy Alert
Here’s the catch with all that sunshine and calm air: pollen counts will run high today. Tree pollen is still very active across the Pacific Northwest in May, and still, sunny, low-wind days tend to push counts up sharply. Keep some allergy relief nasal spray handy if you’re spending extended time outside. When you come back in, running a HEPA air purifier will help keep your indoor air clean — both are worth having on hand through the rest of May.
Mariners Gameday at T-Mobile Park
The Seattle Mariners host the San Diego Padres today at T-Mobile Park, and the weather is about as cooperative as it gets for outdoor baseball — low 60s, nearly no wind, and zero rain in the forecast. Grab your Seattle Mariners jersey and a Seattle Mariners fitted cap before heading down to SoDo. Still hunting for seats? Get tickets on SeatGeek or Find tickets on StubHub.
Tonight also brings The Phantom of the Opera (Touring) to the Paramount Theatre and A Taste of Ireland to the Moore Theatre — both easy calls for a mild, dry Sunday evening. And if you’re planning further ahead, the Stifel Stars on Ice skating spectacular comes to Climate Pledge Arena on May 23 — worth locking in now.
Next Few Days
Monday looks even better — highs near 66°F, mostly sunny, light westerly winds. Tuesday brings more cloud cover as a weak system grazes north of the region; lowland Seattle stays dry, but the North Cascades could see a stray afternoon shower. The ridge rebuilds Wednesday through the weekend, with highs climbing into the 60s and lower 70s — a genuinely nice stretch for the region.
Tonight’s Dinner
A simple pasta or stir-fry fits a breezy spring Sunday perfectly — quick to pull together so you can still catch the sunset. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
