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Is Sun Valley snowsure?

The snowiest week in Sun Valley is week 1 of March. There are typically 3.6 snowy days during this week with 18cm of snowfall. Check out the Sun Valley Snow History graphs below. Select any week of the year to see the typical Ski Conditions, Snowfall Amount and Temperature based on nowcast weather data over the last 11 years.

Average monthly snow in Sun Valley

MonthSnow amount (week)Snow days (week)
December14cm3.1 days
January12cm2.7 days
February14cm3.4 days
March14cm3.4 days
April7cm2.8 days

Average Snow and Weather Conditions in Sun Valley during October (week 3):

The average snowfall forecast during week 3 of October for Sun Valley is 2 cm. There are typically 0.4 snowy days during this week. Sun Valley typical weather and snow conditions during the third week of October at the middle elevation of the ski area at 2262m, based on historical averages over the last 10 years: At this time of year the average freezing level (3249m) is well above the mid altitude of Sun Valley. A day with snowfall happens on average every second year during the third week of October but on average there is one wet day during this week every year. In the years when snow falls at this time of year, forecast model average snowfall for the week is 4cm. Temperatures averaging above freezing both day and night in Sun Valley during week three of October with average maximum temperature 6.5°C and minimum temperature 4.1°C at the mid altitude. Usually there are four days per week when the sun comes out at this time of year. Generally light winds (average 13km/h).


Snow History: Compare Resorts


Compare Sun Valley with:

Snow Depths

Recorded snow depths for the upper and lower slopes in Sun Valley and (2007 – 2018).

Winter
Summer

Sun Valley

Chart


Lower Slopes
Upper Slopes
Fresh Snow

Average Snow Conditions in

Best ski days per week in Sun Valley and (2007 – 2018)

Winter
Summer

Bluebird Powder Day
(Fresh snow, mostly sunny, light wind)
Powder Day
(Fresh snow, limited sun, any wind)
Bluebird Day
(Average snow, mostly sunny, light wind)
Very windy days
(>30km/h)

The most cherished days on the mountain in Sun Valley are Bluebird Powder days when it is mostly sunny with light winds following very recent snowfall. Poorer weather conditions may prevail on Powder days when the visibility can be limited but the snow is significantly deep and fresh for keen powder-hounds. Bluebird days can suit many skiers that aren’t necessarily hunting powder but want to enjoy the snowy mountains in sunnier conditions and light winds.


Average Snowfall in

Graph showing the average precipitation (snow/rain) in Sun Valley and (2007 – 2018)

Winter
Summer

Snowfall amount
(bar chart)
Days with significant snowfall.
(>5cm)
Days with significant rainfall.
(>5mm)

The snowiest weeks of the year in Sun Valley are shown but also bear in mind the number of days that it typically snows each week if you want regular fresh tracks. The risk of a rainy day is shown but be sure to switch between elevations to see if lower lifts are rain affected or higher lifts remain snowy despite any rain further down the mountain.


Average Temperature in

Graph showing the average temperature and freezing level at Sun Valley and (2007 – 2018)

Winter
Summer

Average temperature
Maximum
Minimum
Temperatures
Above freezing
Below freezing
Freezing level
Dashed line

The highest and lowest temperatures averaged for each week of the year in Sun Valley are shown. Check out the risk of freze-thaw conditions prevailing at different elevations for any given week. We also show the extremes of temperature (blue/red dots) that reveal the chance of unusually warm or cold conditions.