A Frost Advisory and a Freeze Watch are in effect for parts of northwest and west-central Oregon and southwest Washington from late Friday night through Saturday morning.
NWS Portland and NWS Seattle say temperatures could fall as low as 26 degrees in the Freeze Watch area near Chehalis.
Frost Advisory: NWS Portland
The advisory runs from midnight Friday night to 9 AM PDT Saturday. Temperatures of 36 degrees or lower will result in frost formation.
It covers 15 zones, including the Clatsop and Tillamook County Coasts, the Central Oregon Coast and Coast Range, the Lower Columbia River, the Inner and East Portland Metro, the Outer Southeast Portland Metro and the West Columbia River Gorge above 500 feet.
It also covers the Cascade Foothills of Marion and Linn Counties, the Lane County Cascade Foothills, the Willapa Hills, Cowlitz County Lowlands, the Inner Vancouver Metro and East Clark County Lowlands.
Places include Portland, Vancouver, Gresham, Camas, Lake Oswego, Astoria, Seaside, Newport, Longview, Kelso and Oregon City.
Freeze Watch: NWS Portland and NWS Seattle
The watch runs from late Friday night through Saturday morning. Sub-freezing temperatures of 32 degrees or lower are possible.
Oregon: Central Oregon Coast Range Lowlands, Tualatin Valley, West Central Willamette Valley, East Central Willamette Valley and the Clackamas County Cascade Foothills.
Washington: North Clark County Lowlands, plus the Lowlands of Lewis and Southern Thurston Counties.
Places include Salem, Hillsboro, Tigard, Sherwood, McMinnville, Newberg, Keizer, Battle Ground, Ridgefield, Chehalis and Grand Mound.
NWS Seattle says lows could reach 26 to 30 degrees in the Lewis and Southern Thurston County lowlands, which include Rochester, Grand Mound, Fords Prairie and Chehalis.
Season-Ending Frost and Freeze Headlines
NWS Portland issues frost and freeze headlines only during the growing season, April 1 through October 31. None will be issued from November 1, even if similar low temperatures are possible.
No more frost or freeze headlines will be issued this season for the Upper Hood River Valley, southern Willamette Valley, south Washington Cascade Foothills and north Oregon Coast Range, which already had a hard freeze earlier in October.
How to Protect Plants and…
Read full article: Dangerous Frost and Freeze Warnings for Many Oregon and Washington Counties as Temperatures Drop Sharply
The post “Dangerous Frost and Freeze Warnings for Many Oregon and Washington Counties as Temperatures Drop Sharply” by Viktor Vincej was published on 10/29/2026 by www.travelinglifestyle.net