Grangeville, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grangeville, a city in Idaho County, Idaho.
Tonight
34°F
Mostly Cloudy
Mostly cloudy, with a low around 34. Wind around 0 mph.
7-day forecast for Grangeville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 34°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 49°F | Sunny | 2 mph NE | 0% |
| Wednesday Night | 34°F | Partly Cloudy then Chance Light Rain | 3 mph S | 35% |
| Thursday | 46°F | Chance Light Rain | 3 mph SW | 35% |
| Thursday Night | 32°F | Partly Cloudy | 5 mph SSW | 3% |
| Friday | 51°F | Partly Sunny | 2 to 8 mph S | 5% |
| Friday Night | 38°F | Mostly Cloudy | 3 to 10 mph S | 5% |
| Saturday | 58°F | Mostly Sunny | 1 to 7 mph S | 3% |
| Saturday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 14 mph S | 18% |
| Sunday | 56°F | Slight Chance Light Rain | 3 to 14 mph WSW | 18% |
| Sunday Night | 38°F | Mostly Cloudy | 0 to 3 mph SSW | 11% |
| Monday | 54°F | Partly Sunny then Slight Chance Light Rain | 1 mph N | 15% |
| Monday Night | 39°F | Slight Chance Light Rain | 0 to 3 mph NNW | 15% |
| Tuesday | 56°F | Mostly Sunny | 3 mph SSW | 14% |
Forecast source: National Weather Service (api.weather.gov) for Grangeville (45.926, -116.122). Updated through the day.
Growing snapshot for Grangeville
Last spring frost
May 9
First fall frost
Oct 3
Growing season
146 days
Hardiness zone
6b
More local growing data for Grangeville: nearby ZIP 83530 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grangeville, Id (4.9 mi from Grangeville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.