Seattle is waking up to a brilliant Sunday with temperatures climbing to near 86°F under wall-to-wall sunshine — but the National Weather Service is calling for Moderate HeatRisk and elevated fire danger across western Washington. Check the Seattle weather forecast for updates as this heat wave rolls on.
Today’s Setup
A powerful upper-level ridge anchored offshore is funneling hot, dry air across the region. Light north winds (3 to 9 mph) and low relative humidity mean temperatures will climb fast. The National Weather Service expects record highs along the I-5 corridor today — including in Seattle and Olympia — making this one of the hottest June Sundays on record.
Best Window To Be Outside
Get out early. Green Lake, Discovery Park, and the Elliott Bay waterfront are gorgeous before 11 AM PT, but peak heating from noon to 4 PM PT will make exposed areas genuinely uncomfortable. If you’re planning a float on Lake Washington, a 2-Person Intex Floating Lounge with Cooler Just $24 on Amazon is a perfect way to beat the heat. Find more warm-weather picks in our outdoor gear deals.
Heat and Fire Risk
The National Weather Service flags Moderate HeatRisk for both today and Monday. Overnight lows will only fall to around 59–62°F — near record-warm for this time of year — so homes without air conditioning won’t get much relief overnight. A ceiling fan smart remote can help you optimize airflow room by room without cranking an AC unit.
Offshore flow is also driving elevated fire danger with lower relative humidity across the region. Skip any outdoor burning this weekend. With smoke a real concern heading into summer fire season, having an air purifier for smoke on hand is smart preparation, and storing your critical paperwork in a fireproof document safe gives you peace of mind if conditions worsen.
Upcoming Events
Tonight, the Seattle Men’s Chorus: Sing Along, Seattle! performs at Neptune Theatre — a perfect air-conditioned escape from the heat. This week stays busy: Madison Beer brings her locket tour to the Paramount Theatre on June 16. Grab tickets on SeatGeek and show up in style with a Madison Beer t-shirt. Then the KID CUDI PRESENTS: THE REBEL RAGERS TOUR 2026 hits Cascades Amphitheater on June 20 — an outdoor show you’ll want to plan around the weather.
Mariners fans: the Seattle Mariners host the Baltimore Orioles at T-Mobile Park on June 18. Midweek temperatures should moderate nicely for an evening in SODO — gear up with a Seattle Mariners jersey before you head out.
Dinner Idea
Hot days call for something light. If you do fire up the grill this Father’s Day weekend, a Father’s Day grilling set makes it easy — just keep the flame well clear of dry grass. A quick stir-fry or pasta dish keeps the kitchen cool if you’d rather stay in. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
The heat intensifies Monday, with the National Weather Service forecasting a high near 89°F — another likely record along the I-5 corridor. Overnight lows both Sunday and Monday nights will hover near 62°F with little relief. By Tuesday, increasing onshore flow breaks the ridge and pulls temperatures back toward seasonable levels, where they should stay through the rest of the week. Soak up the sunshine while it lasts.
