Lake Cassidy, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Cassidy, a community in Snohomish County, Washington.
Overnight
51°F
Clear
Clear, with a low around 51. North northwest wind around 2 mph.
7-day forecast for Lake Cassidy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Clear | 2 mph NNW | 0% |
| Tuesday | 85°F | Areas Of Smoke | 1 to 7 mph NW | 0% |
| Tuesday Night | 55°F | Patchy Smoke then Mostly Clear | 1 to 6 mph N | 0% |
| Wednesday | 88°F | Patchy Smoke | 1 to 5 mph NW | 0% |
| Wednesday Night | 58°F | Clear | 1 to 5 mph NNE | 0% |
| Thursday | 89°F | Sunny | 0 to 5 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 1 to 5 mph NE | 0% |
| Friday | 86°F | Sunny | 1 to 5 mph SW | 0% |
| Friday Night | 57°F | Mostly Clear | 5 mph NNW | 0% |
| Saturday | 80°F | Sunny | 1 to 8 mph NNW | 0% |
| Saturday Night | 54°F | Mostly Clear | 1 to 8 mph NNW | 0% |
| Sunday | 78°F | Mostly Sunny | 1 to 5 mph WNW | 0% |
| Sunday Night | 53°F | Mostly Clear | 1 to 5 mph N | 2% |
| Monday | 77°F | Mostly Sunny | 0 to 5 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Lake Cassidy (48.066, -122.082). Updated through the day.
Growing snapshot for Lake Cassidy
Last spring frost
Mar 24
First fall frost
Nov 2
Growing season
223 days
Hardiness zone
8b
More local growing data for Lake Cassidy: nearby ZIP 98258 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
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Arlington Heights
Bothell East
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Eastmont
Edmonds
Esperance
Everett
Fobes Hill
Gold Bar
Granite Falls
Hat Island
Kayak Point
Lake Bosworth
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Larch Way
Lochsloy
Climate data from the nearest NOAA station, Everett, Wa (6.6 mi from Lake Cassidy). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.