Sisco Heights, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Sisco Heights, 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 Sisco Heights

When	Temp	Forecast	Wind	Precip
Overnight	51°F	Clear	2 mph NNW	0%
Tuesday	85°F	Sunny then Areas Of Smoke	1 to 8 mph NW	0%
Tuesday Night	55°F	Patchy Smoke then Mostly Clear	1 to 7 mph NNW	0%
Wednesday	89°F	Patchy Smoke	1 to 7 mph NW	0%
Wednesday Night	58°F	Clear	2 to 7 mph NNE	0%
Thursday	89°F	Sunny	1 to 6 mph NW	0%
Thursday Night	58°F	Mostly Clear	1 to 6 mph N	0%
Friday	85°F	Sunny	1 to 7 mph SW	0%
Friday Night	57°F	Mostly Clear	2 to 7 mph NNW	0%
Saturday	80°F	Sunny	1 to 8 mph NW	0%
Saturday Night	54°F	Mostly Clear	1 to 8 mph NNW	0%
Sunday	77°F	Mostly Sunny	1 to 7 mph W	0%
Sunday Night	53°F	Mostly Clear	1 to 7 mph NNW	1%
Monday	77°F	Mostly Sunny	1 to 6 mph W	1%

Forecast source: National Weather Service (api.weather.gov) for Sisco Heights (48.118, -122.110). Updated through the day.

Growing snapshot for Sisco Heights

Last spring frost

Mar 24

First fall frost

Nov 2

Growing season

223 days

Hardiness zone

More local growing data for Sisco Heights: nearby ZIP 98270 weather · frost dates · planting calendar · Washington frost dates

Nearby towns & communities

Alderwood Manor Arlington Arlington Heights Bothell East Bothell West Brier Bunk Foss Canyon Creek Cathcart Cavalero Chain Lake Clearview Darrington Eastmont Edmonds Esperance Everett Fobes Hill Gold Bar Granite Falls Hat Island Kayak Point Lake Bosworth Lake Cassidy Lake Cavanaugh Lake Goodwin Lake Roesiger Lake Stevens Lake Stickney Larch Way

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Climate data from the nearest NOAA station, Everett, Wa (6 mi from Sisco Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.