Sun Valley, ID Weather & Growing Conditions
Today
82°F
Patchy Smoke
Patchy smoke. Sunny. High near 82, with temperatures falling to around 80 in the afternoon. Northwest wind 3 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Patchy Smoke | 3 to 10 mph NW | 0% |
| Tonight | 44°F | Areas Of Smoke | 7 to 10 mph NW | 0% |
| Wednesday | 87°F | Areas Of Smoke | 3 to 10 mph W | 0% |
| Wednesday Night | 48°F | Mostly Clear | 7 to 10 mph NW | 0% |
| Thursday | 93°F | Sunny | 6 to 10 mph WNW | 0% |
| Thursday Night | 52°F | Clear | 6 to 10 mph WNW | 0% |
| Friday | 94°F | Sunny | 6 to 13 mph WNW | 0% |
| Friday Night | 53°F | Mostly Clear | 8 to 14 mph WNW | 0% |
| Saturday | 93°F | Sunny | 6 to 14 mph WNW | 0% |
| Saturday Night | 54°F | Mostly Clear | 8 to 14 mph NW | 0% |
| Sunday | 91°F | Sunny | 6 to 15 mph W | 0% |
| Sunday Night | 52°F | Mostly Clear | 7 to 14 mph WNW | 0% |
| Monday | 89°F | Sunny | 6 to 14 mph W | 0% |
| Monday Night | 51°F | Mostly Clear | 7 to 13 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sun Valley, ID
Growing season
77 days
Hardiness zone
5b
Explore more for Sun Valley, ID: full frost dates · planting calendar · Idaho frost dates
Climate data from the nearest NOAA station, Ketchum Rs, Id (2.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.