High 78° · Low 39°
0% chance of rainMostly sunny. High near 78, with temperatures falling to around 76 in the afternoon. South southwest wind 3 to 8 mph.
Ski resort
Sun Valley weather
Sun Valley, ID
74° now
Today: Mostly Sunny, high 78°, 0% chance of rain
Current observed weather and the available forecast for Sun Valley. Conditions can change quickly; check local alerts before travel.
Usually open November to April
Sun Valley is usually closed in October. Check the official calendar before you go.
2026-2027 Opening Day is Thursday, November 26 at River Run; Bald Mountain traditionally closes in mid-April.
From Sun Valley 2022-23 season wrap-up (closing mid-April), checked . Dates change each year.
Mountain facts
Scheduled to open (official announcement). Opening dates depend on snow and can change.
- Base
- 5,750 ft
- Summit
- 9,150 ft
- Vertical
- 3,400 ft
This forecast is for the main base area at about 5,750 feet. The summit is 3,400 feet higher and is usually colder and windier.
For snow depth, lifts and trails, see the official Sun Valley snow report.
Current conditions
Current weather at Sun Valley
Broken clouds
Observed at 12:45 PM local time
74°Feels like 73°
- Humidity
- 33%
- Wind
- 12 mph
- Sunrise
- 7:36 AM
- Sunset
- 7:17 PM
At a glance
Today and Tomorrow at Sun Valley
High 78° · Low 43°
0% chance of rainSunny. High near 78, with temperatures falling to around 76 in the afternoon. West wind 5 to 9 mph.
Hour by hour
Sun Valley hourly forecast for the next 24 hours
- 74°Mostly Sunny0% rain
- 76°Mostly Sunny0% rain
- 77°Mostly Sunny0% rain
- 78°Mostly Sunny0% rain
- 76°Mostly Sunny0% rain
- 75°Mostly Cloudy0% rain
- 71°Mostly Cloudy0% rain
- 63°Mostly Cloudy0% rain
- 59°Mostly Cloudy0% rain
- 55°Mostly Cloudy0% rain
- 52°Partly Cloudy0% rain
- 50°Mostly Clear0% rain
- 48°Mostly Clear0% rain
- 47°Mostly Clear0% rain
- 45°Mostly Clear0% rain
- 43°Mostly Clear0% rain
- 41°Mostly Clear0% rain
- 41°Mostly Sunny0% rain
- 40°Mostly Sunny0% rain
- 39°Mostly Sunny0% rain
- 44°Sunny0% rain
- 56°Sunny0% rain
- 65°Sunny0% rain
- 72°Sunny0% rain
Day by day
Sun Valley 7-day forecast
- Mostly SunnyUp to 0% rain78° / 39°
- SunnyUp to 0% rain78° / 43°
- SunnyUp to 0% rain81° / 47°
- Mostly SunnyUp to 2% rain80° / 42°
- SunnyUp to 0% rain77° / 39°
- SunnyUp to 0% rain77° / 39°
- SunnyUp to 1% rain76° / 41°
Forecast from the National Weather Service, updated 11:30 AM local time. Hourly values are for the forecast grid cell containing this location. Current conditions from OpenWeather.
Averages, not a forecast
Sun Valley weather by month
In an average October, highs are near 56° and lows near 28°, with measurable precipitation on about 5 days.
July is usually the warmest month (average high 80°), and January the coldest (average low 8°). December has the most days with precipitation, and July the fewest.
| Month | Avg high | Avg low | Precip. days | Precip. |
|---|---|---|---|---|
| January | 31° | 8° | 10 | 2.3 in |
| February | 35° | 11° | 9 | 1.9 in |
| March | 43° | 19° | 8 | 1.8 in |
| April | 52° | 27° | 7 | 1.2 in |
| May | 62° | 35° | 8 | 1.8 in |
| June | 70° | 40° | 7 | 1.3 in |
| July | 80° | 45° | 4 | 0.6 in |
| August | 79° | 44° | 4 | 0.5 in |
| September | 69° | 36° | 4 | 1.0 in |
| October | 56° | 28° | 5 | 1.4 in |
| November | 41° | 17° | 6 | 1.2 in |
| December | 30° | 9° | 11 | 2.6 in |
NOAA 1991–2020 U.S. Climate Normals from the KETCHUM RS, ID US station, 1 miles away. Precipitation days count days with at least 0.01 inch.
Confirm before you go
Sun Valley location and park links
Check current hours, access, fees, closures, and local guidance with the destination itself.
- Type
- Ski resort
- City
- Sun Valley, ID
- Address
- 1 Sun Valley Road
- Visitor information
- Visit Sun Valley website