Frost Advisory

Locations Affected

Salem, OR ∙ Hillsboro, OR ∙ Beaverton, OR ∙ West Longview, WA ∙ Amboy, WA ∙ Marshland Division, OR ∙ King City, OR ∙ Gaston, OR ∙ Metzger, OR ∙ Carrolls, WA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Portland OR 1246 PM PDT Thu Apr 2 2026 ...FROST ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 10 AM PDT FRIDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Northern and Central Coast Range Valleys and Mountains of Oregon, Lower Columbia River and Cowlitz River Valleys, Portland Metro Hills, Central Willamette Valley, Tualatin Valley, West Columbia River Gorge of Oregon above 500 ft, Clackamas County Cascade Foothills, Willapa Hills, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...From 9 PM this evening to 10 AM PDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Areas that remain shaded through the morning will see frost linger the longest. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.

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