First Major Rain, Cold System for Washington / Oregon Coast This Week

Published 09/114/21 at 5:26 AM PDT
By Oregon Coast Beach Connection staff

(Manzanita, Oregon) – The bulk of the Pacific Northwest and the coastlines of Oregon and Washington will see the first cold and wet streak since last winter, arriving later in the week. Exactly how much rainfall will hit the Washington coast and Oregon coast is not clear yet, but the National Weather Service (NWS) offices in Seattle and Portland are sending out messages about the big shift.

While the southern Oregon coast will also get rain, the Medford office of the NWS is not touting as big an impact.

The NWS sent out a special weather statement for the southern Washington coast and upper half of the Oregon coast – as well as the valley regions - saying this week will start off in the 60s and 70s but by midweek there will be another direction.

It's not a coastal storm, but it is lively, wet, weather and will be breezy.

“A series of strong, wet cold fronts will bring an end to this long dry and hot summer,” the NWS said. “Overnight temperatures will cool into the lower to middle 40s Wednesday night, with some of our more exposed and traditionally cooler locales dropping down into the 30s.”

Frost will become a problem for some inland areas of Washington and Oregon overnight, and the NWS advises taking precautions for plants.

“Afternoon high temperatures will be in the 70s through Thursday, then cool to the 60s for Friday into this weekend,” the NWS said of inland areas.

The Washington coast down through the south Oregon coast will remain in the 60s and sunny on Thursday, except for areas south of Port Orford which will climb into the 70s.

“A strong cold front will push into the region Friday and Friday night, bringing the first significant widespread rain to the region since last spring,” the NWS said. “Exact amounts are still being ironed out, but there is increasing confidence for at least a half inch or more for the interior lowlands, with one to two inches for the Willapa Hills, Coast Range and the Cascades.”

More of that is expected Sunday and Monday, with a drier, warmer trend happening again later.

In the first part of this week, the extreme south Oregon coast will be experiencing considerable haze from wildfire smoke.

Thunderstorms could be hitting the upper half of the Washington coast over the weekend, the NWS said.

See Oregon Coast Weather - Washington Coast Weather

Seas will be somewhat tempestuous for the next few days, with small craft advisories in store for the majority of the Washington and Oregon coastline, but more severe offshore weather from Cape Blanco southward.

No major wave action is expected along the coastal shorelines, however.

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