Big Lake, WA Weather & Growing Conditions
Overnight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. Northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Mostly Cloudy | 3 mph NE | 0% |
| Saturday | 69°F | Partly Sunny | 0 to 3 mph WSW | 0% |
| Saturday Night | 50°F | Mostly Clear | 0 to 3 mph NNE | 0% |
| Sunday | 70°F | Mostly Sunny | 1 to 5 mph SSW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 0 to 3 mph NE | 0% |
| Monday | 66°F | Mostly Sunny | 1 to 5 mph WSW | 0% |
| Monday Night | 49°F | Partly Cloudy | 1 to 5 mph E | 0% |
| Tuesday | 62°F | Partly Sunny | 1 to 5 mph S | 0% |
| Tuesday Night | 48°F | Mostly Cloudy | 0 to 3 mph ESE | 13% |
| Wednesday | 61°F | Partly Sunny then Slight Chance Light Rain | 3 mph SSW | 17% |
| Wednesday Night | 48°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph ENE | 17% |
| Thursday | 60°F | Mostly Cloudy then Slight Chance Light Rain | 1 to 5 mph N | 16% |
| Thursday Night | 46°F | Slight Chance Light Rain | 1 to 5 mph NNE | 24% |
| Friday | 59°F | Slight Chance Light Rain | 3 mph W | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Big Lake, WA
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
8b
Explore more for Big Lake, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Arlington, Wa (10.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.