Ione, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ione, a town in Pend Oreille County, Washington.
Overnight
48°F
Mostly Clear
Mostly clear. Low around 48, with temperatures rising to around 50 overnight. Wind around 0 mph.
7-day forecast for Ione
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 86°F | Sunny | 2 mph W | 0% |
| Tuesday Night | 51°F | Mostly Clear | 1 mph NW | 0% |
| Wednesday | 93°F | Areas Of Smoke | 2 mph W | 0% |
| Wednesday Night | 54°F | Smoke then Mostly Clear | 2 mph SW | 0% |
| Thursday | 98°F | Sunny | 0 to 3 mph SW | 0% |
| Thursday Night | 58°F | Mostly Clear | 0 to 3 mph S | 0% |
| Friday | 98°F | Sunny | 0 to 5 mph S | 0% |
| Friday Night | 57°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Saturday | 94°F | Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 56°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 91°F | Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 54°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Monday | 89°F | Sunny | 0 to 5 mph S | 1% |
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 Aug 4, 2026.