Big Sky Snow Report and Forecast
Updated 19 May 2026 11:50 UTC
Snow Forecast for Big Sky
Snow and Weather from 19 May.
For Forecast detail, see below.
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Big Sky Snow Forecast Highlights
When will there be fresh snow in Big Sky?
| Next Snow Expected | 20 May |
|---|---|
| Next Snow Amount | 2cm 1in |
| Next 48 Hours | 7cm 3in |
| Next 7 Days | 8cm 3in |
Forecast for today in Big Sky
Max 11℃ 51°F
Min -7℃ 19°F
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -7℃ 19°F and rising to 11℃ 51°F
Temperature at BaseTemp at Base
Tue
19
Snow unlikely
Clear sky early, then cloudy later.
Forecast times for Big Sky are in Denver (US/Mountain) time zone.
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| Tue 19 | Wed 20 | Thu 21 | Fri 22 | Sat 23 | Sun 24 | Mon 25 | |
|---|---|---|---|---|---|---|---|
| Wind | NW F3 | W F3 | SW F3 | SW F3 | |||
| 3,410m 11,188ft | 0℃ 32°F
 | 0℃ 32°F
+2cm +1in
| -3℃ 26°F
 +5cm +2in
| 4℃ 39°F
| 10℃ 50°F
| 12℃ 54°F
| 11℃ 51°F
 |
| NW F2 | SW F3 | SW F3 | SW F3 | ||||
| 2,740m 8,990ft | 4℃ 40°F
| 4℃ 40°F
+2cm +1in
| 1℃ 34°F
+5cm +2in
| 8℃ 47°F
| 14℃ 58°F
| 16℃ 61°F
| 15℃ 59°F
|
| SW F3 | SW F3 | ||||||
| 2,070m 6,791ft | 11℃ 51°F
| 11℃ 52°F
| 6℃ 42°F
+1cm
| 13℃ 55°F
| 19℃ 65°F
| 21℃ 69°F
| 19℃ 67°F
|
| Snow Line | varying 2,299m 7,543ft | varying 2,469m 8,100ft | |||||
| Max Town | 11℃ 51°F | 11℃ 52°F | 6℃ 42°F | 13℃ 55°F | 19℃ 65°F | 21℃ 69°F | 19℃ 67°F |
| Min Town | -7℃ 19°F | 0℃ 33°F | -3℃ 27°F | -4℃ 25°F | 1℃ 33°F | 6℃ 43°F | 6℃ 43°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.
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Snow Forecast near Big Sky
| Ski Area | 48 Hr | 7 Day | Tu | We | Th | Fr | Sa | Su | Mo |
|---|---|---|---|---|---|---|---|---|---|
| Moonlight Basin | 5cm 2in | 6cm 2in |
Snow Reliability
Big Sky enjoys reliable snow conditions, with an average annual snowfall of over 400 inches. Skiers can expect a solid snow depth throughout the season, but it's advisable to check J2Ski for the latest snow conditions.
Understanding and predicting Snow Conditions in Big Sky
Here are our tips for making the most of a trip to Big Sky, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Big Sky, 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 Big Sky 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 Big Sky 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 Big Sky 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.