Cottage Lake, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cottage Lake, a community in King County, Washington.
Today
85°F
Sunny then Areas Of Smoke
Areas of smoke after noon. Sunny, with a high near 85. North wind 2 to 6 mph.
7-day forecast for Cottage Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny then Areas Of Smoke | 2 to 6 mph N | 0% |
| Tonight | 57°F | Patchy Smoke then Clear | 1 to 5 mph N | 0% |
| Wednesday | 90°F | Areas Of Smoke | 1 to 5 mph NNW | 0% |
| Wednesday Night | 59°F | Clear | 0 to 5 mph N | 0% |
| Thursday | 91°F | Sunny | 0 to 3 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 3 mph NNE | 0% |
| Friday | 88°F | Sunny | 3 mph SW | 0% |
| Friday Night | 59°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 83°F | Sunny | 0 to 6 mph NNW | 0% |
| Saturday Night | 56°F | Mostly Clear | 2 to 8 mph NNE | 1% |
| Sunday | 79°F | Mostly Sunny | 2 mph WNW | 1% |
| Sunday Night | 56°F | Mostly Clear | 3 mph N | 1% |
| Monday | 78°F | Mostly Sunny | 3 mph NW | 3% |
| Monday Night | 56°F | Partly Cloudy | 3 mph N | 1% |
Forecast source: National Weather Service (api.weather.gov) for Cottage Lake (47.746, -122.076). Updated through the day.
Growing snapshot for Cottage Lake
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
8b
More local growing data for Cottage Lake: nearby ZIP 98077 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
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East Renton Highlands
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Lake Forest Park
Climate data from the nearest NOAA station, Monroe, Wa (7.1 mi from Cottage Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.