Donnelly, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Donnelly, a city in Valley County, Idaho.
Tonight
41°F
Patchy Fog
Showers and thunderstorms likely before 11pm, then patchy fog and showers and thunderstorms between 11pm and 1am, then areas of fog and a chance of showers and thunderstorms. Mostly cloudy, with a low around 41. North northwest wind 0 to 5 mph. Chance of precipitation is 80%.
7-day forecast for Donnelly
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 41°F | Patchy Fog | 0 to 5 mph NNW | 80% |
| Saturday | 68°F | Areas Of Fog then Mostly Sunny | 0 to 5 mph NNW | 14% |
| Saturday Night | 39°F | Mostly Clear then Areas Of Fog | 3 mph NE | 2% |
| Sunday | 73°F | Areas Of Fog then Sunny | 0 to 3 mph S | 0% |
| Sunday Night | 42°F | Clear | 0 to 3 mph N | 0% |
| Monday | 74°F | Patchy Fog then Sunny | 3 mph SSE | 0% |
| Monday Night | 42°F | Mostly Clear | 3 mph NE | 0% |
| Tuesday | 74°F | Sunny | 1 to 5 mph SW | 1% |
| Tuesday Night | 42°F | Mostly Clear | 2 mph S | 1% |
| Wednesday | 74°F | Sunny | 2 to 6 mph SSE | 2% |
| Wednesday Night | 42°F | Mostly Clear | 5 mph ESE | 1% |
| Thursday | 78°F | Sunny | 5 mph SSE | 0% |
| Thursday Night | 44°F | Partly Cloudy | 2 to 8 mph SSE | 1% |
| Friday | 74°F | Mostly Sunny | 6 mph SSE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Donnelly (44.733, -116.087). Updated through the day.
Growing snapshot for Donnelly
Last spring frost
May 30
First fall frost
Sep 19
Growing season
110 days
Hardiness zone
5a
More local growing data for Donnelly: nearby ZIP 83615 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cascade 1 Nw, Id (12.6 mi from Donnelly). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.