Ice Dam Prevention in Washington
In Washington, local ice dams deadlines run from Oct 16 to Dec 16, with a median around Nov 15 — a spread of weeks that a single statewide date would miss. Find your city below; each links to local freeze odds, a live 10-day outlook, and a checklist.
Notable cities
- Spokane — earliest deadline in the state
- Bellingham — latest deadline in the state
- Kirkland — near the state median
All Washington cities
| City | Local deadline | Median first 28°F | ||
|---|---|---|---|---|
| Spokane | Oct 16 | Oct 27 | View → | Checklist |
| Tacoma | Oct 16 | Dec 1 | View → | Checklist |
| Yakima | Oct 16 | Oct 16 | View → | Checklist |
| Spokane Valley | Oct 16 | Oct 27 | View → | Checklist |
| Lakewood | Oct 16 | Dec 11 | View → | Checklist |
| Puyallup | Oct 16 | Nov 14 | View → | Checklist |
| Seattle | Nov 15 | Dec 2 | View → | Checklist |
| Bellevue | Nov 15 | Dec 11 | View → | Checklist |
| Kent | Nov 15 | Nov 24 | View → | Checklist |
| Renton | Nov 15 | Dec 6 | View → | Checklist |
| Federal Way | Nov 15 | Dec 1 | View → | Checklist |
| Kirkland | Nov 15 | Dec 11 | View → | Checklist |
| Auburn | Nov 15 | Nov 24 | View → | Checklist |
| Marysville | Nov 15 | Nov 21 | View → | Checklist |
| Redmond | Nov 15 | Dec 11 | View → | Checklist |
| Shoreline | Nov 15 | Dec 11 | View → | Checklist |
| Sammamish | Nov 15 | Nov 29 | View → | Checklist |
| Burien | Nov 15 | Dec 10 | View → | Checklist |
| Olympia | Nov 15 | Nov 1 | View → | Checklist |
| Lacey | Nov 15 | Nov 1 | View → | Checklist |
| Edmonds | Nov 15 | Dec 6 | View → | Checklist |
| Bremerton | Nov 15 | Nov 30 | View → | Checklist |
| Bellingham | Dec 16 | Nov 21 | View → | Checklist |
Back to the national Ice Dam Prevention guide, or see the methodology.
Data: NOAA NCEI 1991–2020 U.S. Climate Normals; live outlook by Open-Meteo. Last updated: July 11, 2026.