Challis, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Challis, a city in Custer County, Idaho.
This Afternoon
48°F
Partly Sunny
Partly sunny. High near 48, with temperatures falling to around 44 in the afternoon. East northeast wind around 1 mph.
7-day forecast for Challis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 48°F | Partly Sunny | 1 mph ENE | 0% |
| Tonight | 30°F | Mostly Cloudy | 1 mph NNW | 0% |
| Wednesday | 52°F | Mostly Sunny | 1 mph NE | 0% |
| Wednesday Night | 27°F | Mostly Clear | 3 mph SW | 0% |
| Thursday | 48°F | Partly Sunny | 2 mph SW | 8% |
| Thursday Night | 25°F | Patchy Fog | 3 mph WSW | 8% |
| Friday | 51°F | Mostly Sunny | 2 mph SSW | 2% |
| Friday Night | 30°F | Partly Cloudy | 1 to 5 mph SW | 2% |
| Saturday | 56°F | Mostly Sunny | 1 mph S | 0% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 8 mph SW | 0% |
| Sunday | 60°F | Mostly Sunny | 6 mph SSW | 0% |
| Sunday Night | 32°F | Partly Cloudy | 1 to 6 mph SW | 1% |
| Monday | 57°F | Mostly Sunny | 2 mph SSW | 1% |
| Monday Night | 33°F | Partly Cloudy | 1 to 7 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Challis (44.506, -114.228). Updated through the day.
Growing snapshot for Challis
Last spring frost
Jun 12
First fall frost
Sep 6
Growing season
85 days
Hardiness zone
5b
More local growing data for Challis: nearby ZIP 83235 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, May 2Sse, Id (8.6 mi from Challis). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.