Seattle is in for a stretch of intense summer heat, with temperatures expected to climb well above normal through Thursday. The FOX 13 Seattle Weather Team has issued a weather alert for Sunday through Thursday, warning that highs will reach at least 88°F (31°C) in the city. The hottest day looks to be Wednesday, when the mercury could climb into the low 90s°F (33–34°C).
Hot, dry conditions settle over Puget Sound
Parts of the Washington coast woke up to cloudy skies Sunday morning, but across Puget Sound, sunshine quickly took over. Expect dry and increasingly hot weather to hold steady through the start of the workweek, with no significant cooling until at least Monday.
Red Flag Warning issued for Central Cascades
While the Seattle metro bakes under the heat, wildfire concerns are escalating to the east. A Red Flag Warning is in effect today from 2 p.m. to 9 p.m. for the East Washington Central Cascades, where gusty winds and very low humidity will create dangerous fire weather conditions. On Monday, a broader Fire Weather Watch will go into effect for much of Eastern Washington, with the risk of rapid fire growth continuing into the evening.
Although the immediate Seattle area is not under fire alerts, the statewide wildfire threat remains high due to dry vegetation and a prolonged stretch of hot weather.
A brief cool-down Monday before the heat returns
Western Washington will get a brief break on Monday, with morning cloud cover and cooler air bringing daytime highs down to the mid to upper 70s°F (24–26°C). But this reprieve won’t last. By Tuesday, the heat will ramp up again, leading into a true summer heatwave.
Expect Seattle to reach the upper 80s and low 90s°F (31–34°C) through the middle of the week. Wednesday is forecast to be the peak, with clear skies and scorching sunshine dominating the region.
Dangerous cold water remains a risk despite heat
Even as the weather sizzles, lakes, rivers, and coastal waters in Western Washington remain cold year-round. Health officials are urging people to wear life vests and stay alert to the risk of cold water shock, which can affect even strong swimmers in just seconds.
Stay alert for worsening fire conditions
With heat and wind on the rise, fire danger will remain a major concern through midweek, particularly in Eastern Washington. Residents in Seattle and across the state should stay informed, stay cool, and be extremely cautious when outdoors—especially around dry brush and open flames.
