Ketchum, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ketchum, a city in Blaine County, Idaho.
Today
83°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 83. South southeast wind 3 to 8 mph.
7-day forecast for Ketchum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Smoke | 3 to 8 mph SSE | 0% |
| Tonight | 46°F | Areas Of Smoke | 8 mph NW | 0% |
| Wednesday | 87°F | Areas Of Smoke | 3 to 8 mph W | 0% |
| Wednesday Night | 50°F | Mostly Clear | 8 mph NW | 0% |
| Thursday | 92°F | Sunny | 5 to 8 mph NW | 0% |
| Thursday Night | 54°F | Clear | 5 to 8 mph NW | 0% |
| Friday | 93°F | Sunny | 6 to 10 mph WNW | 0% |
| Friday Night | 54°F | Mostly Clear | 6 to 10 mph NW | 0% |
| Saturday | 92°F | Sunny | 5 to 12 mph WNW | 0% |
| Saturday Night | 55°F | Mostly Clear | 6 to 10 mph NW | 0% |
| Sunday | 91°F | Sunny | 5 to 13 mph W | 0% |
| Sunday Night | 54°F | Mostly Clear | 5 to 12 mph NW | 0% |
| Monday | 89°F | Sunny | 5 to 12 mph W | 0% |
| Monday Night | 53°F | Mostly Clear | 5 to 10 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Ketchum (43.688, -114.380). Updated through the day.
Growing snapshot for Ketchum
Growing season
77 days
Hardiness zone
5b
More local growing data for Ketchum: nearby ZIP 83353 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ketchum Rs, Id (1.8 mi from Ketchum). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.