Seattle is heating up to near 89°F today, Monday June 15, under partly sunny skies — a rare inland heat event the National Weather Service says could break records across Western Washington. Get outside this morning while it’s manageable; a powerful marine push arrives tonight and Tuesday will run a full 13 degrees cooler. Stay current with the Seattle weather forecast.
Today’s Setup
An upper-level ridge locked over the Pacific Northwest is squeezing out the heat, pushing interior highs into the 80s to mid-90s. High clouds filtering in from a weather system sliding through British Columbia keep it “partly sunny” rather than full blaze — but don’t underestimate the afternoon heat. A heat advisory remains in effect until 5 AM Tuesday: drink water, check on vulnerable neighbors, and keep pets out of hot cars.
Best Window To Be Outside
Morning through early afternoon is your sweet spot. Head to Gas Works Park, Green Lake, or grab a paddleboard on Lake Washington before the heat peaks. Northwest winds stay light at 0 to 9 mph, so conditions are comfortable in the shade. By tonight, the thermally induced surface trough shifts east of the Cascades and onshore marine air begins flowing in. The National Weather Service expects stratus to push toward the South Puget Sound by Tuesday sunrise — so don’t bank on a long stargazing evening.
Backyard and Grilling Window
Tonight is a prime opportunity before the cooldown settles in. Fire up the propane gas grill and keep dinner simple — pasta or a quick veggie stir-fry is perfect for a warm Monday night. Father’s Day is Sunday, and a Father’s Day grilling set makes a well-timed gift for the weekend ahead. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered straight to your door.
Events This Week
Tuesday, June 16: Madison Beer brings the locket tour to the Paramount Theatre. Indoor show, so weather is no concern — grab a Madison Beer t-shirt or Madison Beer hoodie before you go. Find tickets on StubHub if you still need them.
Wednesday–Thursday, June 17–18: The Seattle Mariners host the Baltimore Orioles at T-Mobile Park. Both days look sunny and mild — textbook baseball weather. Wear your Seattle Mariners jersey or Seattle Mariners fitted cap and Get tickets on SeatGeek. Wednesday evening also brings Natalia Lafourcade to the Paramount Theatre on the Cancionera Tour — a beautiful night for live music. Snag a Natalia Lafourcade t-shirt and enjoy the show.
Saturday, June 20: The Kid Cudi Rebel Ragers Tour rolls into the Cascades Amphitheater. Outdoor show — the forecast currently looks dry and comfortable, but check back as the week unfolds.
Next Few Days
Tuesday drops to near 76°F and mostly sunny as the marine push completes its work — still a lovely day, just closer to normal June Seattle. Wednesday holds at 74°F with full sunshine and light westerly winds. The National Weather Service says the upper-level ridge rebuilds Thursday, keeping conditions dry and mild through the weekend. Browse outdoor gear deals to make the most of the stretch — a 2-Person Intex Floating Lounge with Cooler Just $24 on Amazon is practically begging to be on Lake Union right now.
