Ione, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ione, a town in Pend Oreille County, Washington.
Tonight
33°F
Mostly Cloudy
Mostly cloudy, with a low around 33. Wind around 0 mph.
7-day forecast for Ione
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 55°F | Sunny | 1 mph S | 1% |
| Wednesday Night | 34°F | Mostly Cloudy then Rain And Snow Showers | 0 mph | 84% |
| Thursday | 47°F | Areas Of Fog then Mostly Cloudy | 1 mph S | 84% |
| Thursday Night | 34°F | Mostly Cloudy | 0 mph | 8% |
| Friday | 50°F | Mostly Cloudy | 0 to 3 mph S | 14% |
| Friday Night | 34°F | Slight Chance Rain Showers | 2 mph SE | 24% |
| Saturday | 56°F | Mostly Cloudy | 1 mph E | 13% |
| Saturday Night | 37°F | Mostly Cloudy then Chance Rain Showers | 1 to 6 mph SE | 28% |
| Sunday | 53°F | Chance Rain Showers | 2 to 6 mph S | 28% |
| Sunday Night | 33°F | Mostly Cloudy | 2 mph S | 9% |
| Monday | 52°F | Mostly Cloudy then Slight Chance Rain Showers | 1 mph NE | 15% |
| Monday Night | 34°F | Chance Rain Showers | 1 mph E | 37% |
| Tuesday | 53°F | Chance Rain Showers | 2 mph SE | 37% |
Forecast source: National Weather Service (api.weather.gov) for Ione (48.740, -117.422). Updated through the day.
Growing snapshot for Ione
Last spring frost
May 4
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
6a
More local growing data for Ione: nearby ZIP 99152 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Boundary Dam, Wa (11.1 mi from Ione). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.