Valley, WA Weather & Growing Conditions
Tonight
46°F
Mostly Clear
Mostly clear. Low around 46, with temperatures rising to around 48 overnight. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Mostly Clear | 0 mph | 0% |
| Saturday | 78°F | Sunny | 0 to 3 mph S | 0% |
| Saturday Night | 46°F | Partly Cloudy | 1 mph E | 0% |
| Sunday | 80°F | Sunny | 0 to 3 mph SE | 0% |
| Sunday Night | 47°F | Mostly Clear | 2 mph N | 0% |
| Monday | 80°F | Sunny | 1 to 5 mph SE | 0% |
| Monday Night | 48°F | Partly Cloudy | 0 to 3 mph W | 0% |
| Tuesday | 76°F | Mostly Sunny | 0 to 5 mph S | 1% |
| Tuesday Night | 46°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Wednesday | 72°F | Mostly Sunny | 0 to 6 mph SE | 0% |
| Wednesday Night | 45°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Thursday | 76°F | Mostly Sunny | 0 to 3 mph E | 3% |
| Thursday Night | 47°F | Mostly Cloudy | 2 mph NE | 9% |
| Friday | 72°F | Partly Sunny then Slight Chance Rain Showers | 1 to 6 mph S | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Valley, WA
Last spring frost
May 16
First fall frost
Sep 15
Growing season
120 days
Hardiness zone
6b
Explore more for Valley, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Chewelah, Wa (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.