Vashon, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Vashon, a community in King County, Washington.
Tonight
41°F
Partly Cloudy then Patchy Fog
Patchy fog between midnight and 3am. Partly cloudy, with a low around 41. North wind around 3 mph.
7-day forecast for Vashon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 41°F | Partly Cloudy then Patchy Fog | 3 mph N | 3% |
| Wednesday | 56°F | Partly Sunny then Slight Chance Light Rain | 2 to 6 mph SSW | 21% |
| Wednesday Night | 49°F | Light Rain | 6 to 12 mph SSW | 98% |
| Thursday | 56°F | Partly Sunny | 7 to 10 mph SSW | 13% |
| Thursday Night | 48°F | Light Rain | 7 mph S | 78% |
| Friday | 55°F | Light Rain | 7 to 10 mph S | 78% |
| Friday Night | 49°F | Chance Light Rain | 2 to 8 mph S | 47% |
| Saturday | 59°F | Chance Light Rain | 5 mph S | 33% |
| Saturday Night | 51°F | Light Rain Likely | 5 to 20 mph SSW | 73% |
| Sunday | 56°F | Light Rain Likely | 7 to 17 mph SSW | 69% |
| Sunday Night | 46°F | Slight Chance Light Rain | 3 to 7 mph SE | 24% |
| Monday | 55°F | Light Rain Likely | 3 to 7 mph SE | 55% |
| Monday Night | 49°F | Light Rain Likely | 7 to 10 mph S | 72% |
| Tuesday | 56°F | Light Rain Likely | 8 to 14 mph S | 72% |
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
Nearby towns & communities
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Clyde Hill
Cottage Lake
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East Renton Highlands
Fairwood
Fall City
Federal Way
Greenwater
High Bridge
Hobart
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Index
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Kent
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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 Nov 4, 2026.