Sun Valley, ID Weather & Growing Conditions
Tonight
36°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before midnight, then a chance of showers and thunderstorms between midnight and 4am, then a slight chance of showers and thunderstorms between 4am and 5am. Mostly cloudy. Low around 36, with temperatures rising to around 38 overnight. North wind around 6 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 36°F | Chance Showers And Thunderstorms | 6 mph N | 39% |
| Saturday | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 5 mph SW | 47% |
| Saturday Night | 35°F | Partly Cloudy | 1 to 5 mph NNE | 14% |
| Sunday | 66°F | Mostly Sunny | 2 to 6 mph W | 3% |
| Sunday Night | 37°F | Mostly Clear | 5 mph N | 3% |
| Monday | 69°F | Sunny | 2 to 7 mph W | 3% |
| Monday Night | 40°F | Partly Cloudy | 5 mph N | 1% |
| Tuesday | 71°F | Mostly Sunny | 3 to 7 mph W | 5% |
| Tuesday Night | 40°F | Partly Cloudy | 5 mph NNW | 3% |
| Wednesday | 72°F | Sunny | 3 to 8 mph SW | 1% |
| Wednesday Night | 40°F | Mostly Clear | 6 mph NNE | 4% |
| Thursday | 73°F | Sunny | 5 to 9 mph ESE | 3% |
| Thursday Night | 42°F | Partly Cloudy | 6 mph ENE | 1% |
| Friday | 73°F | Mostly Sunny | 5 to 9 mph SE | 4% |
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 (1.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.