Frost Advisory

Locations Affected

Porter, WA ∙ Onalaska, WA ∙ Rochester, WA ∙ McKenna, WA ∙ Hoquiam Bowerman Airport, WA ∙ Winlock, WA ∙ Grapeview, WA ∙ Melbourne, WA ∙ Toledo, WA ∙ McCleary, WA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Seattle WA 835 PM PDT Fri Apr 3 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT SATURDAY... * WHAT...Temperatures as low as 32 to 36 degrees will result in frost formation. * WHERE...Lower Chehalis River Valley, Middle Chehalis River Valley, Foothills and Valleys of Thurston and Lewis Counties, Lowlands of Lewis and Southern Thurston Counties, Olympia and Southern Puget Sound, and Willapa and Black Hills. * WHEN...Until 9 AM PDT Saturday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold.

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