J2Ski USA J2Ski logo
Facebook

Big Sky Snow Forecast - 31st August 2026

Big Sky Snow Report and Forecast

ECMWF IFS
GEM
GFS

PROSubscribe to Switch Weather Model

Updated 31 August 2026 05:47 PDT

Snow Forecast for Big Sky

Snow and Weather from 31 August.

For Forecast detail, see below.

Big Sky Snow Forecast Highlights

When will there be fresh snow in Big Sky?

Big Sky Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (8,990ft)
Next Snow?
There is no snow currently in the forecast for Big Sky.

Forecast for today in Big Sky

Max 71°F
Min 36°F

Valley temperatures from an overnight low of 36°F to daytime highs around 71°F
Freeze-thaw conditions up high.

Temperature at BaseTemp at Base

Mon
31

Snow unlikely

ClearClearClearClear

Clear sky.

Forecast times for Big Sky are in Denver (US/Mountain) time zone.

Big Sky 7-Day Snow Forecast Overview

Get this snow forecast by e-mail

Summary Weather and Snow Forecast for Big Sky from OpenMeteo(GFS)
Mon
31
Tue
01
Wed
02
Thu
03
Fri
04
Sat
05
Sun
06
WindSW F3S F2S F3SW F3SE F2SE F2
11,188ft
53°F
Clear
53°F
Cloud
51°F
Cloud
47°F
Cloud
55°F
Clear
54°F
Clear
60°F
Cloud
W F3SE F2S F3SW F3SE F2SE F2
8,990ft
61°F
Clear
61°F
Cloud
59°F
Cloud
55°F
Cloud
63°F
Clear
62°F
Clear
68°F
Cloud
SE F2S F3SW F3SE F2SE F2
6,791ft
71°F
Clear
72°F
Cloud
67°F
Cloud
63°F
Cloud
71°F
Clear
70°F
Clear
76°F
Cloud
Snow Line
Max Town71°F72°F67°F63°F71°F70°F76°F
Min Town36°F52°F46°F41°F42°F47°F49°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.

United States Accommodation (Apartments, Chalets, Hotels) Map

 

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.