Ione, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ione, a town in Pend Oreille County, Washington.
Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. Wind around 0 mph.
7-day forecast for Ione
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 0 mph | 0% |
| Saturday | 82°F | Sunny | 2 mph S | 0% |
| Saturday Night | 49°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 83°F | Sunny | 2 mph SW | 0% |
| Sunday Night | 50°F | Mostly Clear | 1 mph W | 0% |
| Monday | 82°F | Sunny | 2 mph SW | 0% |
| Monday Night | 50°F | Partly Cloudy | 1 mph SW | 0% |
| Tuesday | 79°F | Mostly Sunny | 0 to 3 mph S | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 2 mph S | 1% |
| Wednesday | 74°F | Mostly Sunny | 0 to 3 mph S | 1% |
| Wednesday Night | 48°F | Mostly Cloudy | 2 mph S | 1% |
| Thursday | 77°F | Mostly Sunny | 2 mph SE | 4% |
| Thursday Night | 49°F | Mostly Cloudy | 2 mph E | 11% |
| Friday | 73°F | Partly Sunny then Slight Chance Rain Showers | 0 to 3 mph S | 20% |
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 Sep 19, 2026.