What’s Happening
The National Weather Service in Seattle issued a Frost Advisory on Saturday, April 25, 2026 at 10:02 AM PDT. Temperatures as low as 32°F are forecast overnight, which will cause frost formation and can damage or kill sensitive outdoor plants left uncovered.
Where
The advisory covers Southern Hood Canal (which includes Belfair and the North Mason shoreline along the canal), the Olympia and Southern Puget Sound area, the Lowlands of Lewis and Southern Thurston Counties, the Lowlands of Pierce and Southern King Counties, and the City of Seattle. Mason County is included via the Southern Hood Canal zone (WAZ321) and SAME code 053045.
When
In effect from 11 PM Saturday night (April 25) through 10 AM Sunday morning (April 26).
What To Do
- Cover sensitive plants — vegetables, tender annuals, anything newly planted. A sheet, frost cloth, or even a cardboard box works.
- Bring potted plants inside or move them against the south side of the house under cover.
- Drain garden hoses and disconnect them from spigots to prevent freeze damage.
- Cover outdoor faucets with insulated covers if you have them.
- Check on neighbors — especially anyone elderly or with outdoor pets.
Source
National Weather Service Seattle — Frost Advisory issued April 25, 2026 at 10:02 AM PDT, valid through April 26 at 10:00 AM PDT. weather.gov/sew
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