Seattle, Washington – Heat returns to western Washington Monday with Seattle temperatures soaring to 85°F by midday, triggering a regional heat advisory through 10 p.m.
According to the National Weather Service, the advisory covers central and west-central Washington, including King, Pierce, Snohomish, and Thurston counties. Daytime highs between 85°F and 90°F are expected in metro areas, while the Cascade valleys could push into the mid-90s. Overnight lows will remain in the 60s, offering little relief.
The NWS warns of a moderate risk of heat-related illness, especially for seniors, children, and those without air conditioning. Stay indoors during peak heat hours and hydrate frequently. Temperatures will rise quickly after 10 a.m., with downtown areas and transit corridors like I-5 likely to retain heat well into the evening.
Water dangers also increase this week. Lake and river temperatures remain in the 40s and 50s — much colder than the air. The NWS notes that “cold water shock” can overwhelm even experienced swimmers. Use life jackets and avoid alcohol if entering local waters.
Seattle schools and outdoor programs may modify schedules Monday afternoon, and power grid strain could increase if cooling demands spike.
While temperatures cool slightly Tuesday, sunshine and dry conditions persist through the week. No precipitation is expected.
🔎 Five-Day Forecast for Seattle (June 8–13)
- Sunday: Sunny, high 85°F
- Monday: Sunny, high 82°F | Low 60°F
- Tuesday: Sunny, high 81°F | Low 54°F
- Wednesday: Mostly sunny, high 75°F | Low 52°F
- Thursday: Partly sunny, high 69°F
➡️ Next Update: Heat advisory remains in effect until 10 p.m. Monday — additional alerts possible if temperatures stay elevated.
