Ione, WA Weather & Growing Conditions
Overnight
45°F
Mostly Clear
Mostly clear, with a low around 45. North wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Mostly Clear | 7 mph N | 0% |
| Saturday | 59°F | Sunny | 5 mph SE | 0% |
| Saturday Night | 46°F | Partly Cloudy | 3 mph SW | 0% |
| Sunday | 60°F | Sunny | 5 mph S | 0% |
| Sunday Night | 46°F | Mostly Clear | 6 mph S | 0% |
| Monday | 60°F | Sunny | 6 mph SE | 0% |
| Monday Night | 47°F | Partly Cloudy | 6 mph E | 0% |
| Tuesday | 57°F | Mostly Sunny | 7 mph SE | 0% |
| Tuesday Night | 46°F | Mostly Cloudy | 6 mph SE | 0% |
| Wednesday | 54°F | Mostly Sunny | 5 to 8 mph SE | 3% |
| Wednesday Night | 43°F | Mostly Cloudy | 3 to 7 mph SE | 3% |
| Thursday | 52°F | Partly Sunny | 5 mph SE | 2% |
| Thursday Night | 43°F | Slight Chance Rain Showers | 5 mph E | 19% |
| Friday | 49°F | Chance Rain Showers | 5 mph SE | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Ione, WA
Last spring frost
May 4
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
6a
Explore more for Ione, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Boundary Dam, Wa (19.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.