Frost dates in Jefferson County, Washington
The average last spring frost in Jefferson County falls Mar 1 to Apr 29 and the average first fall frost Oct 17 to Nov 28, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 8b to 9a. Places: Brinnon, Forks, Marrowstone, Port Hadlock-Irondale, Port Ludlow, Port Townsend. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.
| ZIP | Place | Last spring frost | First fall frost | Zone |
|---|---|---|---|---|
| 98320 | Brinnon | Apr 11 | Oct 28 | 8b |
| 98325 | Port Hadlock-Irondale | Mar 1 | Nov 28 | 8b |
| 98331 | Forks | Apr 29 | Oct 17 | 8b |
| 98339 | Port Hadlock-Irondale | Mar 1 | Nov 28 | 8b |
| 98358 | Marrowstone | Mar 1 | Nov 28 | 9a |
| 98365 | Port Ludlow | Apr 11 | Oct 28 | 8b |
| 98368 | Port Townsend | Mar 1 | Nov 28 | 8b |
| 98376 | Quilcene | Apr 11 | Oct 28 | 8b |
Nearby counties
Kitsap County Island County Mason County Snohomish County King County San Juan County
All Washington counties · Download Washington frost dates (CSV)
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