Big Lake, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Big Lake, a community in Skagit County, Washington.

Today

72°F

Partly Sunny

Partly sunny. High near 72, with temperatures falling to around 70 in the afternoon. West wind 0 to 3 mph.

7-day forecast for Big Lake

When	Temp	Forecast	Wind	Precip
Today	72°F	Partly Sunny	0 to 3 mph W	0%
Tonight	52°F	Mostly Clear	2 mph W	0%
Sunday	73°F	Partly Sunny	0 to 3 mph SW	0%
Sunday Night	52°F	Partly Cloudy	0 to 3 mph ENE	0%
Monday	71°F	Mostly Sunny	3 mph SW	0%
Monday Night	52°F	Partly Cloudy	0 to 3 mph S	0%
Tuesday	68°F	Partly Sunny	0 to 3 mph SW	0%
Tuesday Night	51°F	Mostly Cloudy	0 to 3 mph E	12%
Wednesday	67°F	Partly Sunny then Slight Chance Light Rain	2 mph SW	19%
Wednesday Night	51°F	Slight Chance Light Rain then Mostly Cloudy	2 mph S	19%
Thursday	66°F	Mostly Cloudy then Slight Chance Light Rain	0 to 3 mph NW	16%
Thursday Night	49°F	Slight Chance Light Rain	0 to 3 mph NNW	23%
Friday	65°F	Slight Chance Light Rain then Partly Sunny	0 to 3 mph WNW	23%
Friday Night	48°F	Slight Chance Light Rain	3 mph NNE	15%

Forecast source: National Weather Service (api.weather.gov) for Big Lake (48.396, -122.243). Updated through the day.

Growing snapshot for Big Lake

Last spring frost

Mar 27

First fall frost

Nov 6

Growing season

224 days

Hardiness zone

More local growing data for Big Lake: nearby ZIP 98235 weather · frost dates · planting calendar · Washington frost dates

Nearby towns & communities

Alger Anacortes Bay View Bow Bryant Burlington Clear Lake Concrete Conway Edison Hamilton La Conner Lake Ketchum Lake McMurray Lyman Marblemount Mount Vernon Rockport Sedro-Woolley

All Washington locations ›

Climate data from the nearest NOAA station, Sedro-Woolley, Wa (2.3 mi from Big Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.