Seattle weather

Tim Durkan

Stormy weather is not unusual this time of year. But the wind has blown in an all-time record high December temperature.

The National Weather Service says 66 degrees were charted Wednesday at Sea-Tac Airport. It’s the warmest for any December going back to 1945, when record keeping began. That caught the attention of KPLU weather expert Cliff Mass.

Jennifer Strachan

Most of the snow fell overnight while western Washington slept, and "the worst is over," says KPLU weather expert Cliff Mass. The metropolitan area of Seattle saw ¾-inch to 3 inches of snow while areas north of the city saw more.

“But for most people, they’ve seen the bulk of what they’re going to get," said Mass, who teaches atmospheric sciences at the University of Washington.

Washington State Department of Natural Resources / Flickr

Drizzly skies are expected to yield to warmer temperatures and some sun this weekend, because of an upper level trough over us and that’s causing upward motion and clouds, says Cliff Mass, KPLU’s weather expert.

Expect progressively warmer weather over the weekend and through Tuesday, says KPLU weather expert Cliff Mass.

Mass, a professor of atmospheric sciences at the University of Washington, says the heat wave hitting the western U.S. is heading our way. He expects highs around 90 on Monday and Tuesday from Seattle to Bellingham, and temperatures in the lower 90s in the south Sound.

KPLU hosts one of the northwest's leading weather experts, University of Washington professor Cliff Mass. Every Friday, Mass talks with KPLU's Keith Seinfeld about the weekend weather and the science behind it.

From time to time, they like to answer questions posed by listeners and readers. This page is your place to pose questions.

Scientists have confirmed what many suspected about this year’s weather. It was the coldest spring on record for Washington and one of the cloudiest.