Best time to ski Sun Valley
For the best snow, ski Sun Valley in February, March, and December. Those months bring 53% of a typical season's snowfall at the summit, based on 10 seasons of modeled weather data (2015–2025).
Sun Valley snowfall by month
Share of a typical season's summit snowfall in each month.
Source: Open-Meteo historical weather (ERA5-based reanalysis), July 2015 to June 2025, at 9,150 ft. Weather models undercount total mountain snowfall, so this shows the seasonal pattern, not inch totals. For season totals, see Sun Valley's website.
How to time your trip
- Deepest snow: February, March, and December get the most snowfall, which usually means the best coverage and the most powder days.
- Main season: months that bring at least 5% of the season's snow are Oct, Nov, Dec, Jan, Feb, Mar, Apr, May. Actual opening and closing dates are set by the resort.
- Book on the forecast: history tells you which months are reliable; the 7-day forecast tells you which week. Snow Way ranks every resort on it daily.
Sun Valley season FAQ
What is the best time to ski Sun Valley?
For the best snow, ski Sun Valley in February, March, and December. Those months bring 53% of a typical season's snowfall at the summit, based on 10 seasons of modeled weather data (2015–2025).
What is the snowiest month at Sun Valley?
February is typically the snowiest month at Sun Valley, with about 19% of the season's snow.
Does Sun Valley have good snow in December?
December brings about 17% of Sun Valley's typical seasonal snowfall, making it one of the snowiest months. Check the live forecast before booking.
Is Sun Valley getting snow right now?
As of Thursday, November 5, 2026, Sun Valley has no new snow in the forecast for the next 7 days. Right now at mid-mountain it's 32°F, clear sky, with 3 mph wind.