Sun Valley Snow Report and Forecast
Snow Forecast for Sun Valley
When will there be fresh snow?
This is the Snow Forecast for Sun Valley, United States for 15 days from 13 March.
Updated 12 March 2025 22:36 GMT.
| Next Snow Expected | 13 March |
|---|---|
| Next Snow Amount | 7cm 3in |
| Next 48 Hours | 8cm 3in |
| Next 7 Days | 19cm 8in |
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For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Sun Valley.
Forecast for today in Sun Valley
Max 6℃ 42°F
Min 1℃ 33°F
Valley temperatures from an overnight low of 1℃ 33°F to daytime highs around 6℃ 42°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Thu
13
2cm to 7cm 1in to 3in New Snow
Cloudy, heavy snow showers, cloudy later.
Snow Line from 2,019m 6,624ft to resort level.
Powder Alert!
Updated 13 March 2025 02:39 GMT
Powder Possible :- 16cm 6in of Fresh Snow is forecast for Sun Valley over the next 3 days.
To get Powder Alerts and Snow Storm Early Warnings by e-mail, Subscribe to our Snow Mail below .
Sun Valley Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
Sun Valley 7-Day Snow Forecast Overview
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| Thu 13 | Fri 14 | Sat 15 | Sun 16 | Mon 17 | Tue 18 | Wed 19 | |
|---|---|---|---|---|---|---|---|
| Wind | SW F3 | NW F3 | S F2 | SW F3 | SE F2 | SE F2 | |
| 2,790m 9,154ft | -3℃ 26°F
+7cm +3in
| -7℃ 19°F
| -8℃ 18°F
+1cm
| -3℃ 26°F
+7cm +3in
| -4℃ 25°F
 +3cm +1in
| -6℃ 20°F
 | -8℃ 17°F
|
| SW F3 | NW F3 | W F3 | SW F2 | NW F2 | NW F2 | ||
| 2,270m 7,448ft | 0℃ 32°F
+7cm +3in
| -4℃ 25°F
| -4℃ 25°F
 +1cm
| 0℃ 31°F
+7cm +3in
| 0℃ 33°F
+2cm +1in
| -2℃ 28°F
+1cm
| -4℃ 25°F
|
| SW F2 | SE F3 | SW F3 | SE F2 | W F2 | NW F2 | ||
| 1,750m 5,741ft | 6℃ 42°F
+2cm +1in
| 0℃ 31°F
| 0℃ 32°F
+1cm
| 2℃ 35°F
+7cm +3in
| 3℃ 37°F
+1cm
| 0℃ 32°F
 | -1℃ 29°F
|
| Snow Line | varying 2,019m 6,624ft | 1,750m 5,741ft | varying 1,899m 6,230ft | varying 2,159m 7,083ft | 1,750m 5,741ft | 1,750m 5,741ft | |
| Max Town | 6℃ 42°F | 0℃ 31°F | 0℃ 32°F | 2℃ 35°F | 3℃ 37°F | 0℃ 32°F | -1℃ 29°F |
| Min Town | 1℃ 33°F | -9℃ 15°F | -5℃ 22°F | -4℃ 24°F | -3℃ 27°F | -10℃ 14°F | -10℃ 13°F |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
Sun Valley Medium-Range (7-Day) Snow Forecast Detail
Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.
Max 6℃ 42°F
Min 1℃ 33°F
Valley temperatures from an overnight low of 1℃ 33°F to daytime highs around 6℃ 42°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Thu
13
2cm to 7cm 1in to 3in New Snow
Cloudy, heavy snow showers, cloudy later.
Snow Line from 2,019m 6,624ft to resort level.
Max 0℃ 31°F
Min -9℃ 15°F
Below freezing at all levels, with valley temperatures as low as -9℃ 15°F and not getting above 0℃ 31°F
Temperature at BaseTemp at Base
Fri
14
Snow unlikely
Cloudy.
Max 0℃ 32°F
Min -5℃ 22°F
Valley temperatures from an overnight low of -5℃ 22°F to daytime highs around 0℃ 32°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Sat
15
1cm New Snow
Cloudy first, light snow then clear sky, cloudy later.
Snow falling to resort level.
Max 2℃ 35°F
Min -4℃ 24°F
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -4℃ 24°F and rising to 2℃ 35°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Sun
16
7cm 3in New Snow
Cloudy early, then heavy snow showers later.
Snow Line from 1,899m 6,230ft to resort level.
Max 3℃ 37°F
Min -3℃ 27°F
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -3℃ 27°F and rising to 3℃ 37°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Mon
17
1cm to 3cm up to 1in New Snow
Light snow at altitude, cloudy, light snow later.
Snow Line from 2,159m 7,083ft to resort level.
Max 0℃ 32°F
Min -10℃ 14°F
Valley temperatures from an overnight low of -10℃ 14°F to daytime highs around 0℃ 32°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Tue
18
Snow unlikely
Light snow first, fair then clear sky, snow showers later.
Max -1℃ 29°F
Min -10℃ 13°F
Below freezing at all levels, with valley temperatures as low as -10℃ 13°F and not getting above -1℃ 29°F
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Wed
19
Snow unlikely
Clear sky early, then cloudy later.
This Snow Forecast for Sun Valley, United States gives the predicted Snowfall and Freezing Levels for the next week.
The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Sun Valley, on any given piste or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.
Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.
Sun Valley Snow Forecast updated at 22:36 GMT, next update expected 04:00 GMT.
Understanding and predicting Snow Conditions in Sun Valley
Here are our tips for making the most of a trip to Sun Valley, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Sun Valley, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Sun Valley is not always controlled (slopes made safe from avalanche risk) or patrolled. Always check local advice, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Sun Valley will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Sun Valley for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.