Big Lake, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Big Lake, a community in Skagit County, Washington.
Overnight
41°F
Mostly Clear
Mostly clear, with a low around 41. Southeast wind around 3 mph.
7-day forecast for Big Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Mostly Clear | 3 mph SE | 1% |
| Wednesday | 59°F | Partly Sunny then Chance Light Rain | 2 to 13 mph SSE | 28% |
| Wednesday Night | 47°F | Light Rain | 8 to 15 mph SSE | 93% |
| Thursday | 56°F | Mostly Sunny | 8 to 12 mph SE | 12% |
| Thursday Night | 46°F | Light Rain | 10 to 15 mph SE | 91% |
| Friday | 55°F | Light Rain | 8 to 18 mph SE | 91% |
| Friday Night | 48°F | Light Rain Likely | 6 to 10 mph ESE | 73% |
| Saturday | 62°F | Chance Light Rain | 7 mph SE | 30% |
| Saturday Night | 49°F | Light Rain | 7 to 18 mph SSE | 83% |
| Sunday | 55°F | Light Rain Likely | 1 to 14 mph SSE | 72% |
| Sunday Night | 42°F | Slight Chance Light Rain | 1 to 7 mph ESE | 23% |
| Monday | 55°F | Chance Light Rain | 6 mph E | 45% |
| Monday Night | 47°F | Light Rain Likely | 6 to 15 mph SE | 64% |
| Tuesday | 57°F | Light Rain Likely | 10 to 16 mph SE | 64% |
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
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Sedro-Woolley
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 Nov 4, 2026.