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Sunny And Hot For Mother’s Day Weekend

Tim Durkan Photography
A great weekend is in store for ferry rides and mothers' day brunches, though clouds will start moving in Sunday, says KPLU Weather Expert Cliff Mass.

Friday is the best day of the weekend to recharge your vitamin D stores by soaking up sun and warmth, says KPLU weather expert Cliff Mass.

But the whole weekend looks pretty glorious. He says the small amount of clouds present are limited to places near the water.

“A few fog patches along the coast, those are burning off, so – great day,” he said of Friday’s weather. “Temperatures will get into the lower to mid-seventies, with total sun, no precipitation, so – wonderful.”

Up to 80 Degrees On Saturday

Saturday will be even warmer, with highs moving up into the mid and upper-70s “so people may even hit 80, away from the water,” he predicts.

But that’s also the day when some high clouds start moving in, he said, especially on the coast and with some coming in to the Puget Sound region.

Then, unfortunately, things will get a little worse on Mother’s Day (Sunday,) he said.

“But I think it will be quite tolerable,” he said.

Clouds Push In Sunday Morning

The source of Sunday’s partly cloudy skies is an upper level trough of low pressure, moving in “mainly to the southwest of us,” he said. That will start pushing some marine air in on Sunday morning and into the afternoon, Mass says.

“So we may start out with a little bit of low clouds, especially along the coast. There will be some mid-level clouds and high level clouds – but I think we will see some filtered sunshine on Sunday,” he said.

Temps on Sunday will drop back near 70.

“So definitely, Mother’s Day won’t be quite as good, but I think it will be good enough – not much rain in the area, maybe a few sprinkles along the coast.”

Mass says cooler temps and rain will move in just in time for the start of the work week, as an upper level trough moves in from the eastern Pacific.

“And I think we’ll see temperatures dropping back into the 60s, for at least the early to mid-week.”

He expects clouds and some light showers too – lightening the load for gardeners or anyone who has been planting things over the weekend.

“We won’t have to water quite as much,” Mass says.

So get out and enjoy it now, the slow decline to clouds and drizzle eases in on Sunday.


The weekly KPLU feature "Weather with Cliff Mass" airs every Friday at 9 a.m. immediately following BirdNote, and twice on Friday afternoons during All Things Considered. The feature is hosted by KPLU Environment Reporter Bellamy Pailthorp. Cliff Mass is a University of Washington Professor of Atmospheric Sciences, a renowned Seattle weather prognosticator, and a popular weather blogger. You can also subscribe to a podcast of “Weather with Cliff Mass” shows.

Bellamy Pailthorp covers the environment for KNKX with an emphasis on climate justice, human health and food sovereignty. She enjoys reporting about how we will power our future while maintaining healthy cultures and livable cities. Story tips can be sent to