Custer, WA Weather & Growing Conditions
Today
71°F
Partly Sunny
Partly sunny. High near 71, with temperatures falling to around 69 in the afternoon. South southwest wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Partly Sunny | 0 to 3 mph SSW | 0% |
| Tonight | 50°F | Partly Cloudy | 0 to 3 mph E | 0% |
| Sunday | 72°F | Partly Sunny | 0 to 3 mph WNW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 0 to 3 mph WSW | 0% |
| Monday | 70°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Monday Night | 50°F | Partly Cloudy | 0 to 5 mph SSW | 0% |
| Tuesday | 68°F | Partly Sunny | 0 to 5 mph S | 0% |
| Tuesday Night | 50°F | Mostly Cloudy then Slight Chance Light Rain | 5 mph SSE | 16% |
| Wednesday | 67°F | Slight Chance Light Rain then Partly Sunny | 5 mph S | 16% |
| Wednesday Night | 50°F | Mostly Cloudy | 0 to 5 mph S | 12% |
| Thursday | 67°F | Partly Sunny | 0 to 5 mph N | 13% |
| Thursday Night | 49°F | Slight Chance Light Rain | 1 to 5 mph WSW | 20% |
| Friday | 66°F | Slight Chance Light Rain then Mostly Sunny | 1 to 6 mph NW | 20% |
| Friday Night | 48°F | Slight Chance Light Rain | 1 to 6 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Custer, WA
Last spring frost
Mar 31
First fall frost
Nov 4
Growing season
219 days
Hardiness zone
8b
Explore more for Custer, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Blaine, Wa (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.