Ione, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ione, a city in Amador County, California.
Overnight
70°F
Clear
Clear, with a low around 70. East southeast wind around 2 mph.
7-day forecast for Ione
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Clear | 2 mph ESE | 0% |
| Tuesday | 102°F | Sunny | 2 to 7 mph WSW | 0% |
| Tuesday Night | 66°F | Clear | 2 to 7 mph E | 0% |
| Wednesday | 100°F | Sunny | 2 to 7 mph NW | 0% |
| Wednesday Night | 64°F | Clear | 2 to 7 mph ESE | 0% |
| Thursday | 100°F | Sunny | 2 to 8 mph W | 0% |
| Thursday Night | 66°F | Clear | 2 to 8 mph NE | 0% |
| Friday | 101°F | Sunny | 2 to 7 mph WNW | 0% |
| Friday Night | 68°F | Clear | 2 to 7 mph NNE | 0% |
| Saturday | 102°F | Sunny | 2 to 6 mph WNW | 0% |
| Saturday Night | 69°F | Mostly Clear | 2 to 6 mph NE | 0% |
| Sunday | 100°F | Sunny | 2 to 7 mph W | 0% |
| Sunday Night | 65°F | Clear | 3 to 7 mph N | 0% |
| Monday | 95°F | Sunny | 3 to 8 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Ione (38.363, -120.948). Updated through the day.
Growing snapshot for Ione
Last spring frost
Mar 4
First fall frost
Dec 11
Growing season
285 days
Hardiness zone
9b
More local growing data for Ione: nearby ZIP 95640 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Amador City
Buena Vista
Drytown
Fiddletown
Jackson
Lockwood
Martell
Mokelumne Hill
Paloma
Pine Grove
Pioneer
Plymouth
Red Corral
River Pines
Sutter Creek
Volcano
Climate data from the nearest NOAA station, Sutter Hill Cdf, Ca (7.9 mi from Ione). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.