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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

WhenTempForecastWindPrecip
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
8b

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

Nearby towns & communities

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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.