Challis, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Challis, a city in Custer County, Idaho.
Today
85°F
Areas Of Smoke
Areas of smoke. Sunny. High near 85, with temperatures falling to around 83 in the afternoon. Northeast wind 1 to 8 mph.
7-day forecast for Challis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Areas Of Smoke | 1 to 8 mph NE | 0% |
| Tonight | 51°F | Areas Of Smoke | 1 to 12 mph WNW | 0% |
| Wednesday | 90°F | Areas Of Smoke | 1 to 7 mph WSW | 0% |
| Wednesday Night | 53°F | Mostly Clear | 2 to 7 mph W | 0% |
| Thursday | 96°F | Sunny | 1 to 6 mph SW | 0% |
| Thursday Night | 57°F | Mostly Clear | 2 to 10 mph WSW | 0% |
| Friday | 98°F | Sunny | 1 to 9 mph SW | 1% |
| Friday Night | 57°F | Mostly Clear | 1 to 15 mph W | 0% |
| Saturday | 97°F | Sunny | 0 to 15 mph SW | 0% |
| Saturday Night | 57°F | Mostly Clear | 1 to 15 mph W | 0% |
| Sunday | 95°F | Sunny | 0 to 15 mph SW | 0% |
| Sunday Night | 56°F | Mostly Clear | 2 to 15 mph W | 0% |
| Monday | 93°F | Sunny | 1 to 13 mph SW | 0% |
| Monday Night | 55°F | Mostly Clear | 2 to 14 mph W | 1% |
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 Aug 4, 2026.