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SEATTLE – The hot weather that arrived in Western Washington is expected to stick around Sunday, even climbing into the triple digits east of the Cascades.

Temperatures flirted with record highs throughout the region Saturday, with a high of 95 in Chehalis, 94 in Shelton and 93 in Sammamish. Olympia had a high of 91, just one degree away from the record high set in 2003.

KING 5 meteorologist Chris Warren said Sunday would be a little cooler on the coast, but a little warmer inland.
"You have to be careful out there," he said. "Check on some of our older citizens around."

On Sunday, the cities of Spokane and Wenatchee could break records. A high of 98 degrees is forecast for Spokane and Wenatchee is expected to reach 102.

The National Weather Service says the hot spell over northwest Oregon and southwest Washington this weekend is a "rather abrupt transition" from the region's cool, wet spring.

Saturday saw record-setting heat in Portland with a high of 99 degrees by 4 p.m. A high of 95 was expected for Sunday.

The weather service issued a heat advisory for Saturday and Sunday. It's warning people to:

-- Be wary of heat exhaustion and heat stroke.

-- Take it easy during the afternoon heat.

-- Wear light clothing, hats and sunscreen.

-- Check on relatives and neighbors. And officials say you should never leave children, frail people or pets in closed cars, even for a few minutes.

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The National Weather Service says temperatures will soar into the 80s and 90s this weekend in Western Washington.

 Northwest Cable News meteorologist Nick Allard said there's a chance for mountain and lowland thunderstorms Sunday night and Monday in Western Washington.

The best chance for lightning will be Sunday night over the mountains.

"While it will be a tad cooler, it will feel more uncomfortable as it will begin to get muggy," he said.

Temperatures should cool off next week, with a chance of showers approaching the Fourth of July.

"It's really too soon to be sure," Allard said. "We'll hope for the best."

The Associated Press contributed to this report.