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Enjoy the sunshine while it lasts—June gloom on the horizon, Cliff Mass says

Jun 9, 2025, 10:00 PM | Updated: Jun 10, 2025, 6:16 am

sun in tacoma- June gloom on the way...

Park goers enjoy the sunshine at Owen Beach in Tacoma. (Photo: Julia Dallas, MyNorthwest)

(Photo: Julia Dallas, MyNorthwest)

A series of warm days in western Washington will soon come to an end.

June gloom is on its way, Atmospheric Sciences Professor at the University of Washington (UW), Cliff Mass, told “The Jason Rantz Show” on KTTH Monday.

June gloom to arrive Thursday

“The June gloom will be here,” he said. “We’ll get it on Thursday, particularly, temperatures will struggle to get above the mid to upper 60s, so the marine air is going to come in. You’ll have the low clouds, and temperatures are going to be cool, and they’re going to stay cool for several days. So, June gloom will be here. It’s delayed, but it is definitely coming.”

Colder weather will be seen throughout western Washington, but temperatures in eastern Washington will remain warm, Mass added.

When asked about drought conditions, Mass said the reservoirs in the west are doing well.

“Seattle, for instance, is exactly at normal, and Tacoma is in good shape, and that’s true of Everett as well,” he said. “So the reservoirs are actually in pretty good shape on the west side, so that there’s not going to be a water shortage. But it has been drier than normal this month and last month. There’s no doubt about that.”

Cliff Mass on dry period: ‘You can’t pin it on global warming’

Mass also noted that the recent dry period has happened before and is not record-breaking.

“You can’t pin it on global warming, but you can pin it on natural variability of the atmosphere,” he said.

However, Mass said the Earth is steadily heating up.

“The truth is I think pretty clear, the Earth is warming slowly, and that’s having an effect on temperatures—they are one to two degrees Fahrenheit warmer than they were. So that’s true,” he said. “We have a warm period. Well, yesterday was 88 in some places, maybe it would have been 87 or 86 if there wasn’t global warming. That’s what we’re talking about. The question about droughts and things like that is much more tenuous. And so there’s no reason to think our precipitation here in the spring season is being affected by global warming.”

Listen to the full conversation below.

Listen to The Jason Rantz Show on weekday afternoons from 3 p.m. – 7 p.m. on KTTH 770 AM (HD Radio 97.3 FM HD-Channel 3). Subscribe to the podcast here. Follow Jason Rantz on ,Ìý,Ìý, and .

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