Vashon, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vashon, a community in King County, Washington.
Overnight
52°F
Mostly Cloudy
Mostly cloudy, with a low around 52. South wind around 2 mph.
7-day forecast for Vashon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 2 mph S | 0% |
| Saturday | 73°F | Partly Sunny | 3 mph SSE | 0% |
| Saturday Night | 53°F | Mostly Clear | 5 mph NNE | 0% |
| Sunday | 73°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Sunday Night | 53°F | Mostly Clear | 2 to 6 mph N | 0% |
| Monday | 71°F | Mostly Sunny | 5 mph NNW | 0% |
| Monday Night | 54°F | Partly Cloudy | 5 mph NNE | 1% |
| Tuesday | 69°F | Partly Sunny | 3 mph NNW | 1% |
| Tuesday Night | 52°F | Mostly Cloudy | 3 mph WSW | 5% |
| Wednesday | 66°F | Partly Sunny | 2 to 6 mph SW | 11% |
| Wednesday Night | 52°F | Mostly Cloudy | 2 to 6 mph N | 11% |
| Thursday | 63°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 9 mph NNE | 19% |
| Thursday Night | 51°F | Slight Chance Light Rain | 3 to 9 mph N | 20% |
| Friday | 62°F | Partly Sunny | 3 to 8 mph N | 14% |
Forecast source: National Weather Service (api.weather.gov) for Vashon (47.411, -122.455). Updated through the day.
Growing snapshot for Vashon
Last spring frost
Mar 2
First fall frost
Nov 23
Growing season
266 days
Hardiness zone
9a
More local growing data for Vashon: nearby ZIP 98070 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Seattle Tacoma Intl Ap, Wa (7.9 mi from Vashon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.