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
54°F
Mostly Clear
Mostly clear, with a low around 54. West wind around 1 mph.
7-day forecast for Big Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Mostly Clear | 1 mph W | 0% |
| Tuesday | 84°F | Patchy Smoke | 0 to 7 mph NW | 0% |
| Tuesday Night | 58°F | Patchy Smoke | 1 to 5 mph WNW | 0% |
| Wednesday | 87°F | Patchy Smoke | 0 to 5 mph WNW | 0% |
| Wednesday Night | 60°F | Clear | 1 to 5 mph NE | 0% |
| Thursday | 87°F | Sunny | 0 to 5 mph WSW | 0% |
| Thursday Night | 60°F | Mostly Clear | 1 to 5 mph SSE | 0% |
| Friday | 83°F | Sunny | 1 to 6 mph SW | 0% |
| Friday Night | 58°F | Mostly Clear | 2 to 6 mph SSW | 0% |
| Saturday | 79°F | Sunny | 1 to 7 mph SW | 0% |
| Saturday Night | 55°F | Mostly Clear | 2 to 7 mph SSW | 0% |
| Sunday | 76°F | Mostly Sunny | 2 to 6 mph SW | 0% |
| Sunday Night | 55°F | Mostly Clear | 1 to 6 mph ENE | 4% |
| Monday | 76°F | Mostly Sunny | 1 to 6 mph SW | 4% |
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 Aug 4, 2026.