by Seattle, Washington – After a mild stretch of summer, Seattle is preparing for a hot weekend as temperatures climb back into the upper 80s and near 90 degrees. The National Weather Service (NWS) has issued a Heat Advisory from Friday, August 22, through Tuesday, August 26, warning residents of increased risks of heat-related illnesses.
Summer Heat Ramps Back Up in Seattle
Seattle residents can expect plenty of sunshine and rising temperatures throughout the weekend.
- Friday: Forecast calls for clear skies and a high of 86 degrees, followed by an overnight low of around 63 degrees.
- Saturday: Predicted to be the hottest day of the weekend, with highs reaching up to 89 degrees. Saturday night will bring partly cloudy skies with a low of 65 degrees.
- Sunday: Highs near 88 degrees are expected under mostly sunny skies, cooling slightly at night with lows again in the mid-60s.
The warmth will continue into next week, with Monday through Wednesday forecasted to remain above 85 degrees. Relief is expected by Thursday, when temperatures dip to about 82 degrees before falling below 80 as September begins.
Extended Forecast Shows Gradual Cooling
By August 29, daytime highs should drop into the upper 70s, with overnight lows between 55–60 degrees, providing more comfortable conditions.
The last 8 p.m. sunset of the season will occur on August 26, giving Seattleites longer evenings to cool down as fall approaches. Temperatures are projected to average around 76 degrees heading into September, with a further dip to 71 degrees by September 3.
Heat Advisory in Effect Across Western Washington
The Heat Advisory covers portions of northwest and west-central Washington, where the NWS expects highs ranging from the mid-80s to low 90s and lows in the 60s.
In its official notice, the NWS warned:
“Hot conditions with high temperatures ranging from the mid-80s to 90s expected, and low temperatures mostly in the 60s. This will pose a moderate risk of heat-related illness.”
The agency highlighted that the elevated temperatures will especially affect sensitive populations, including seniors, children, outdoor workers, and those without reliable air conditioning.
Health Risks and Safety Precautions
Prolonged exposure to hot weather increases the risk of heat-related illnesses, such as heat exhaustion and heatstroke. Symptoms can include dizziness, headaches, nausea, and rapid heartbeat.
The NWS and local health officials recommend the following safety measures:
- Drink plenty of water and avoid alcohol or caffeine.
- Stay indoors during peak heat hours, preferably in an air-conditioned space.
- Use fans and open windows if air conditioning is not available, especially during cooler evenings.
- Check on vulnerable neighbors and relatives, particularly older adults and those with medical conditions.
- Never leave children or pets unattended in vehicles, even for a short period.
City officials also advise residents to take advantage of local cooling centers, libraries, and community facilities if home temperatures become uncomfortable.
Looking Ahead
While the upcoming heatwave is not as intense as those recorded earlier this summer in other parts of the Pacific Northwest, it is still expected to challenge residents accustomed to Seattle’s usually milder climate. The region’s relatively low prevalence of air conditioning in homes means residents should take extra care to avoid dangerous heat exposure.
How are you planning to beat the Seattle heat this weekend? Share your tips and experiences in the comments at ibwhsmag.com and join the community conversation.
