Seattle, WA – Western Washington residents are facing another round of dangerous heat as an Extreme Heat Warning remains in effect through 5 a.m. Tuesday. Highs near 88 degrees Sunday and Monday will push heat stress across the Seattle metro area, where commuters along Interstate 5 could see pavement buckling and increased roadside emergencies. Health officials urge residents to limit outdoor activity, especially during peak afternoon hours.
According to the National Weather Service, temperatures will remain in the upper 80s through Monday, with overnight lows holding in the mid-60s. The extended stretch of warm nights will prevent homes without air conditioning from cooling down, raising risks of heat-related illness. Emergency managers recommend using public cooling centers, staying hydrated, and checking on vulnerable neighbors.
Seattle and nearby cities including Bellevue, Renton, and Everett will feel the worst of the heat, particularly in low-lying urban zones where asphalt traps warmth. Crews with Washington State DOT are monitoring conditions along I-5 and Highway 99, advising drivers to watch for heat-weakened pavement and possible delays.
By Tuesday afternoon, slightly cooler marine air may filter inland, trimming highs to the upper 80s before a sharper cooldown by midweek. Wednesday should bring more comfortable readings near 80, followed by a chance of rain showers Thursday night into Friday.
While the heat warning will expire early Tuesday, forecasters caution that late August weather patterns can shift quickly. Additional advisories could be issued if temperatures rebound. Residents should stay alert for updates and continue to prepare for potential heat-related disruptions.
Five Day Forecast for Seattle, WA
- Monday: Mostly sunny, high 87, low 64.
- Tuesday: Mostly sunny, high 87, low 64.
- Wednesday: Mostly sunny, high 80, low 62.
- Thursday: Mostly sunny, high 81, low 61.
- Friday: Chance of rain, high 74, low 59.
