Seattle, Washington – Highs soaring into the mid-90s will grip parts of Seattle and western Washington beginning Sunday morning, prompting a heat advisory and urgent warnings for road and water safety. Drivers on I-5 and families heading outdoors should take precautions now, as the hottest stretch of the year so far settles in.
According to the National Weather Service in Seattle, the heat advisory takes effect at 10 a.m. Sunday, June 8, and continues through 10 p.m. Monday, June 9. Areas including King, Pierce, Snohomish, and Lewis counties—especially foothills and Cascade valleys—could see highs between 85 and 95 degrees, with overnight lows struggling to dip below 60.
This level of heat increases the risk of heat-related illnesses, especially for the elderly, young children, or those without proper hydration or cooling. Cold lakes and rivers remain a hidden danger: water temperatures in the upper 40s and 50s may cause cold shock even in strong swimmers. Avoid alcohol while swimming and wear a life jacket.
Localized impacts:
- I-5 corridor through Seattle and Tacoma may see pavement buckling, traffic slowdowns
- Sunday outdoor events may see lower turnout or require shaded areas
- Residents in Bothell, Redmond, Federal Way, and Olympia are urged to limit time outside between noon and 5 p.m.
Looking ahead:
- Monday, June 9: Sunny, high near 84°F
- Tuesday: High 81°F, mostly clear overnight
- Wednesday: High near 74°F, a brief cooldown
- Thursday: Slightly warmer, partly sunny and high near 68°F
- Friday: A slight chance of showers, high near 66°F
Heat advisories may be extended if conditions persist beyond Monday. Stay tuned for updates from the National Weather Service.
