Loon Lake, WA Weather & Growing Conditions
Today
49°F
Sunny
Sunny. High near 49, with temperatures falling to around 44 in the afternoon. South wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 49°F | Sunny | 0 to 3 mph S | 2% |
| Tonight | 35°F | Mostly Cloudy then Rain Showers Likely | 1 mph SE | 70% |
| Thursday | 46°F | Rain Showers Likely then Mostly Cloudy | 3 mph S | 70% |
| Thursday Night | 34°F | Mostly Cloudy | 2 mph E | 3% |
| Friday | 47°F | Mostly Cloudy | 5 mph SE | 5% |
| Friday Night | 36°F | Slight Chance Rain Showers | 3 mph E | 16% |
| Saturday | 53°F | Partly Sunny | 3 mph NE | 9% |
| Saturday Night | 39°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph E | 15% |
| Sunday | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph S | 15% |
| Sunday Night | 36°F | Mostly Cloudy | 5 mph SE | 2% |
| Monday | 50°F | Partly Sunny then Slight Chance Rain Showers | 3 mph NE | 15% |
| Monday Night | 37°F | Chance Rain Showers | 2 mph NE | 31% |
| Tuesday | 52°F | Chance Rain Showers | 3 mph SE | 31% |
| Tuesday Night | 39°F | Chance Rain Showers | 5 mph E | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Loon Lake, WA
Last spring frost
May 22
First fall frost
Sep 14
Growing season
112 days
Hardiness zone
6a
Explore more for Loon Lake, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Deer Park Ap, Wa (11.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.