We asked readers and experts, "What exactly is a heat wave?" Experts say it's less about temperatures and more about ...

A heat advisory for northwest and west central Washington was extended until 5 p.m. Thursday, according to the National ...

The Puget Sound region is expected to warm up into the lower-90s Wednesday, with the rest of the week following suit.

Seattle-Tacoma International Airport reached a scorching 94 degrees Wednesday, according to the National Weather Service.

With temperatures expected to hit the 90s in much of Washington Wednesday, the state’s largest utility is paying some customers to save energy.

The most sustained heat wave of the season is on deck, with a string of 80-degree temperatures for the Seattle area extending ...

Seattle's forecast includes heat, humidity, and thunderstorms with varying precipitation chances throughout the week.

The Pacific Northwest is experiencing a multiday heat wave, with cities breaking records and preparing cooling shelters for its residents.

SeaTac, Seattle, Olympia and Bellingham all set daily temperature records on Tuesday, which was projected to be the hottest day of western Washington's heat wave.

Driving this first heat wave for Seattle and surrounding areas is the combination of strong high pressure aloft and low-level air flow.