Seattle woke up under clear skies Sunday, with temperatures in the upper 40s at Boeing Field and a light east-northeast breeze. The sunshine is sticking around through the day, setting up a pleasant afternoon and an easy start to the holiday weekend. Overnight stays mostly clear, with lows in the upper 40s to around 50°F.
Afternoon highs land in the mid 60s across the city today, then Monday brings a more noticeable warm-up into the low 70s. The big jump arrives Tuesday, when inland neighborhoods are likely to climb into the upper 70s to low 80s, while spots closest to Puget Sound run cooler. The spike is expected to be brief, with sea breezes helping keep waterfront areas milder.
Heat Risk Tuesday
Forecasters expect Tuesday to be the hottest day of the stretch, with a Minor to Moderate heat risk for parts of the South Sound, the Chehalis Valley and some Seattle neighborhoods away from the water, according to NWS Seattle. Inland pockets could see daytime highs near or just over 80°F, paired with nights in the upper 50s that cut down on overnight relief. If you or someone you know is heat-sensitive, it is a good idea to shift strenuous outdoor plans to the cooler morning or evening hours.
How To Stay Cool
Public Health – Seattle & King County recommends staying hydrated, checking on older neighbors and seeking out cool, air-conditioned spaces when possible; see local guidance for more detailed tips. If you work outside, build in breaks, use shade whenever you can and carry plenty of water. For full heat-safety steps, visit Public Health – Seattle & King County.
Boaters And Water Users
Marine conditions turn choppy tonight, with seas building to roughly 6 to 8 feet and a continuing Small Craft Advisory for the Strait and Admiralty Inlet. Boaters and small-craft operators should take it seriously and use caution, according to NWS Seattle. Conditions ease into Monday as winds relax and seas fall back to around 4 to 6 feet, but locally steep waves are still expected early tonight. If you are heading out on the water this afternoon, check the latest marine advisories before leaving the dock…