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Weather Seattle, WA

Seattle Weather Wednesday: Mostly Sunny and 67°F — Perfect Mariners Gameday With Rain Returning for Memorial Day

Best Window Wednesday: 67°F, Mostly Sunny
Rain Risk Possible
What To Wear / Bring Rain layer, water-resistant shoes, and a backup indoor plan
Useful Links Local forecast, radar, and relevant planning links
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7-Day Forecast

Wed 67°Mostly Sunny
Thu 73°Sunny
Fri 74°Sunny
Sat 74°Mostly Sunny
Sun 69°Partly Sunny
Mem 60°Light Rain L...
Tue 61°Slight Chanc...

Seattle is waking up to gray skies on Wednesday, May 20, but don’t let that fool you — temperatures will climb to a lovely 67°F this afternoon as clouds give way to mostly sunny skies, making this the best day of the week to get outside.

Today’s Setup

Morning low stratus will be widespread across Puget Sound and the southwest interior before high clouds break up and filtered sunshine takes over, according to the National Weather Service. North winds stay calm at 1 to 8 mph with essentially zero rain chance. Think of it as a classic Seattle “wait for it” morning — by noon PT, Gas Works Park and the waterfront along Elliott Bay will be prime real estate. If you’re heading out for extended sun time, our UPF 50+ Fishing Shirts for $6.50 post is worth a quick look before you go.

Mariners Gameday Conditions

The Seattle Mariners host the Chicago White Sox at T-Mobile Park today, May 20, and conditions couldn’t be better for baseball. Expect mid-60s around first pitch, dipping gently into the low-to-mid 50s by the late innings with barely a breeze. Pack a soft cooler backpack for pre-game snacks, and dress the part — a Seattle Mariners jersey or a Seattle Mariners fitted cap will keep you warm as temps slide after sunset. Still need seats? Get tickets on SeatGeek or Find tickets on StubHub before they sell out.

Allergy Alert

Clear, dry May days are peak pollen days in Seattle, and today is no exception. Grass and tree pollen tend to spike when skies open up across the Puget Sound basin. Keep an allergy relief nasal spray in your bag if you’re spending time outside. Back home, a HEPA air purifier helps filter out what drifts in through open windows, so you’re not paying for today’s sunshine all night long.

Evening & Upcoming Events

Tonight also brings the Seattle Storm vs. Connecticut Sun at Climate Pledge Arena — an easy indoor option if baseball isn’t your thing. On Thursday, May 21, the Paramount Theatre hosts The Phantom of the Opera (Touring) — a perfect no-weather-stress evening downtown. And on May 23, Stars on Ice - U.S. glides into Climate Pledge Arena; grab a Stars on Ice - U.S. t-shirt and Find tickets on StubHub to make a night of it.

Next Few Days

Thursday looks even better — full sunshine with a high near 73°F and calm north winds. The National Weather Service says the upper-level ridge amplifies Thursday before flattening Friday, when interior temperatures could push close to 80°F. Enjoy it while it lasts. By the holiday weekend, onshore flow returns and rain chances increase through Sunday night into Memorial Day. Outdoor events like Claypool Gold at Marymoor Live and Yellowcard at Chateau Ste. Michelle Winery on May 23–24 may catch the early edge of that cooldown — pack a layer and keep an eye on the forecast heading into the weekend.

Dinner Tonight

With mild temperatures and an easy evening ahead, a light pasta toss or a quick stir-fry is all you need — fast, satisfying, and flexible whether you’re heading to T-Mobile Park or watching from the couch. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.

Upcoming Home Games

Plan around the forecast — grab tickets, gear up, and see kickoff conditions.

Seattle Mariners vs Chicago White Sox
Wed, May 20 · T-Mobile Park

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