Challis, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Challis, a city in Custer County, Idaho.
This Afternoon
68°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 68, with temperatures falling to around 66 in the afternoon. North northwest wind around 5 mph. Chance of precipitation is 90%.
7-day forecast for Challis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms | 5 mph NNW | 87% |
| Tonight | 46°F | Showers And Thunderstorms | 0 to 3 mph NW | 88% |
| Saturday | 65°F | Chance Showers And Thunderstorms | 0 to 3 mph N | 49% |
| Saturday Night | 44°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 2 mph N | 20% |
| Sunday | 72°F | Sunny | 2 mph NE | 0% |
| Sunday Night | 47°F | Mostly Clear | 1 mph N | 0% |
| Monday | 78°F | Sunny | 2 mph SE | 0% |
| Monday Night | 48°F | Partly Cloudy | 0 mph | 3% |
| Tuesday | 77°F | Mostly Sunny | 1 mph SE | 4% |
| Tuesday Night | 47°F | Partly Cloudy | 2 mph WSW | 6% |
| Wednesday | 78°F | Sunny | 1 to 5 mph SSW | 3% |
| Wednesday Night | 47°F | Mostly Clear | 3 mph SW | 0% |
| Thursday | 80°F | Sunny | 3 mph SSW | 2% |
| Thursday Night | 48°F | Partly Cloudy | 5 mph SSW | 0% |
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 Sep 19, 2026.