Sunday Lake, WA Weather & Growing Conditions
Tonight
51°F
Partly Cloudy
Partly cloudy, with a low around 51. North wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Partly Cloudy | 2 mph N | 1% |
| Saturday | 72°F | Mostly Cloudy | 1 to 6 mph WNW | 1% |
| Saturday Night | 50°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
| Sunday | 72°F | Mostly Sunny | 0 to 7 mph WNW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 1 to 7 mph WNW | 0% |
| Monday | 71°F | Mostly Sunny | 1 to 7 mph SSW | 0% |
| Monday Night | 51°F | Partly Cloudy | 0 to 7 mph NW | 1% |
| Tuesday | 68°F | Partly Sunny | 0 to 6 mph W | 2% |
| Tuesday Night | 50°F | Partly Cloudy | 1 to 6 mph N | 6% |
| Wednesday | 68°F | Partly Sunny | 1 to 6 mph SSW | 6% |
| Wednesday Night | 50°F | Mostly Cloudy | 1 to 6 mph NNW | 11% |
| Thursday | 70°F | Partly Sunny then Slight Chance Light Rain | 1 to 7 mph SW | 16% |
| Thursday Night | 52°F | Chance Light Rain | 2 to 7 mph SW | 36% |
| Friday | 68°F | Chance Light Rain | 2 to 7 mph SSW | 36% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sunday Lake, WA
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
8b
Explore more for Sunday Lake, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Arlington, Wa (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.