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100-Degree Temps Headed for SW Washington, NW Oregon - Coast Mostly Cool

Published 08/10/21 at 5:22 AM PDT
By Oregon Coast Beach Connection staff

100-Degree Temps Headed for SW Washington, NW Oregon - Coast Mostly Cool

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(Oregon Coast) – Another searing heatwave is headed for most of Oregon and some of Washington, but the coastlines of both states will remain quite cool. Temps are headed beyond 100 for places like Portland, Salem, Eugene or Silverton on Thursday and Friday, yet the Washington coast and Oregon coast stick largely to the 70s or lower.

Some parts of the southern Oregon coast will get to about 80 degrees or higher, according to the National Weather Service (NWS), and a fair amount of wildfire smoke haze will hit farther south as well as much of inland Oregon.

It's all enough to initiate an excessive heat watch, issued by the NWS for Wednesday through Saturday for essentially all of northwest Oregon and southwest, including the Oregon Coast Range and Washington hills – just miles from the beaches.

See Oregon Coast Weather - Washington Coast Weather

The NWS said dangerously hot conditions with temps up to 100 are possible.

“High pressure continues to build over the region which will bring another heatwave to the area through the latter part of the week,” the NWS said. “Expecting temperatures to slowly warm by a few degrees each day through this week, with Thursday and Friday likely to be the hottest days.”

Smoky haze is expected in much of the valley regions and some forecasters are predicting it could be strong enough to keep temperatures down a little, but it is not likely.

“Lows will likely be in the mid 60s to low 70s, which will limit overnight recovery and add an increased risk for heat related illnesses throughout this prolonged event,” the NWS said. “While we are not far removed from the June event, it should be noted that this weather pattern is not similar to the pattern which produced the record shattering heat experienced.”

The Seattle area is also under a heat watch, but temperatures are not expected to clear 100. Wednesday through Friday will bring the highest temps, with Portland around 104 on Thursday.

On the north Washington coast, highs stick around 70 for the week and mostly sunny to almost cloudless at times.

From the south Washington coast down through the central Oregon coast - including Westport, Seaside, Manzanita, Lincoln City or Newport - sunny and slightly warmer conditions are the forecasts, with highs in the low 70s throughout the week.

On the upper part of the south coast – such as around Reedsport, Coos Bay and Bandon - there will be some wildfire haze on Tuesday and Wednesday, but that clears out by Thursday. There, temperatures stick around the lower to mid 70s through much of the week, but by Thursday highs could be in the 80s or 90s, then to the 80s and 70s through the weekend.

Farther south, from Gold Beach and beyond, look for more haze on Tuesday and Wednesday, and likelier more of it. Temps are cooler, however, in the 70s and maybe even upper 60s.

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