A heat advisory will blanket the region starting at 11 a.m. this Friday, Aug. 22, through 5 p.m. Tuesday, Aug. 26, prompting city officials to open the Burien Severe Weather Shelter at Highline United Methodist Church (map below).
“Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration,” the National Weather Service said.
Starting Friday, the church will welcome residents seeking relief from the rising temperatures.
The cooling center will operate daily through Wednesday, Aug. 27, from 10 a.m. to 8 p.m.
The cooling center aims to provide a safe, air‑conditioned refuge during the hottest hours of the day.
The advisory comes as south King County braces for prolonged heat, which local authorities warn could pose health risks to vulnerable populations.
Meteorologists said that temps will start to cool down again on Wednesday, Aug. 27.
Video
Here’s the latest video forecast from Michael Snyder of the Pacific Northwest Weather Watch:
Detailed 7-Day Forecast
- Thursday Night: Clear, with a low around 58. North northeast wind 8 to 10 mph.
- Friday: Sunny, with a high near 85. North wind 7 to 10 mph.
- Friday Night: Clear, with a low around 62. North northeast wind 6 to 8 mph.
- Saturday: Sunny, with a high near 88. North wind 6 to 9 mph.
- Saturday Night: Partly cloudy, with a low around 64. North wind 3 to 8 mph.
- Sunday: Mostly sunny, with a high near 87.
- Sunday Night: Partly cloudy, with a low around 63.
- Monday: Sunny, with a high near 86.
- Monday Night: Mostly clear, with a low around 63.
- Tuesday: Sunny, with a high near 86.
- Tuesday Night: Mostly clear, with a low around 62.
- Wednesday: Sunny, with a high near 85.
- Wednesday Night: Mostly clear, with a low around 60.
- Thursday: Mostly sunny, with a high near 81.
A heat advisory will be in effect from 11 a.m. on Friday, August 22 through 5 p.m. on Tuesday, August 26. Highline United Methodist Church (13015 1st Ave. S., Burien) will host a cooling center from August 22-27, 10 a.m. to 8 p.m. pic.twitter.com/wBbFmGsIEb
— City of Burien, WA (@Burien) August 21, 2025