Cottage Lake, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cottage Lake, a community in King County, Washington.
Overnight
39°F
Patchy Fog
Patchy fog. Mostly clear, with a low around 39. Southeast wind around 1 mph.
7-day forecast for Cottage Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Patchy Fog | 1 mph SE | 0% |
| Wednesday | 58°F | Patchy Fog then Chance Light Rain | 3 mph SSE | 30% |
| Wednesday Night | 47°F | Light Rain | 5 to 8 mph S | 82% |
| Thursday | 56°F | Partly Sunny | 6 mph S | 11% |
| Thursday Night | 45°F | Mostly Cloudy then Light Rain Likely | 3 to 7 mph SE | 72% |
| Friday | 55°F | Light Rain Likely | 2 to 7 mph SE | 72% |
| Friday Night | 48°F | Light Rain Likely | 2 mph SE | 74% |
| Saturday | 62°F | Chance Light Rain | 2 mph SE | 30% |
| Saturday Night | 49°F | Light Rain | 1 to 10 mph SSE | 80% |
| Sunday | 55°F | Light Rain Likely | 1 to 10 mph S | 65% |
| Sunday Night | 42°F | Slight Chance Light Rain | 2 mph SE | 21% |
| Monday | 55°F | Chance Light Rain | 2 mph SE | 38% |
| Monday Night | 46°F | Light Rain Likely | 0 to 7 mph SSE | 56% |
| Tuesday | 58°F | Light Rain Likely | 2 to 7 mph SSE | 58% |
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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Clyde Hill
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Duvall
East Renton Highlands
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Federal Way
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High Bridge
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Issaquah
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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 Nov 4, 2026.