Lake Marcel-Stillwater, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Marcel-Stillwater, a community in King County, Washington.
Overnight
52°F
Clear
Clear, with a low around 52. East wind around 1 mph.
7-day forecast for Lake Marcel-Stillwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Clear | 1 mph E | 0% |
| Tuesday | 85°F | Smoke | 0 to 5 mph NNW | 0% |
| Tuesday Night | 57°F | Areas Of Smoke | 0 to 3 mph NNE | 0% |
| Wednesday | 89°F | Areas Of Smoke | 2 mph NW | 0% |
| Wednesday Night | 59°F | Clear | 2 mph N | 0% |
| Thursday | 90°F | Sunny | 2 mph WNW | 0% |
| Thursday Night | 59°F | Mostly Clear | 2 mph NW | 0% |
| Friday | 86°F | Sunny | 2 mph WNW | 0% |
| Friday Night | 58°F | Mostly Clear | 2 mph NNW | 0% |
| Saturday | 82°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 55°F | Mostly Clear | 0 to 6 mph N | 1% |
| Sunday | 77°F | Mostly Sunny | 2 mph NW | 1% |
| Sunday Night | 54°F | Mostly Clear | 2 mph N | 0% |
| Monday | 77°F | Mostly Sunny | 2 mph NW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Lake Marcel-Stillwater (47.695, -121.915). Updated through the day.
Growing snapshot for Lake Marcel-Stillwater
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
8b
More local growing data for Lake Marcel-Stillwater: nearby ZIP 98019 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
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Clyde Hill
Cottage Lake
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Des Moines
Duvall
East Renton Highlands
Fairwood
Fall City
Federal Way
Greenwater
High Bridge
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Index
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Climate data from the nearest NOAA station, Monroe, Wa (8 mi from Lake Marcel-Stillwater). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.