Fog at mid-mountain, 34°F at Big Sky, Montana, USA. The mountain runs from 7,500ft to 11,214ft, a vertical of 3,714ft, across 300 trails served by 36 lifts. 11in of snow is forecast at the summit over the next seven days.
Base · 7,500ft
40°F
☁️ Overcast
Today high / low
57° / 39°
Snow today
0in
Wind
3 mph
Mid-mountain · 9,357ft
34°F
🌫️ Fog
Today high / low
47° / 33°
Snow today
0in
Wind
8 mph
Summit · 11,214ft
27°F
🌫️ Fog
Today high / low
40° / 26°
Snow today
0in
Wind
8 mph
Big Sky 7-day snow forecast
Seven day weather and snowfall forecast for Big Sky, by elevation.
Day
Conditions
Summit snow
Mid snow
Base snow
Base temp
Sat Oct 10
🌨️ Light snow
0in
0in
0in
57° / 39°
Sun Oct 11
❄️ Heavy snow
9in
9in
8in
39° / 29°
Mon Oct 12
❄️ Heavy snow
2in
2in
2in
34° / 20°
Tue Oct 13
🌫️ Fog
0in
0in
0in
40° / 24°
Wed Oct 14
☁️ Overcast
0in
0in
0in
43° / 24°
Thu Oct 15
⛅ Partly cloudy
0in
0in
0in
44° / 28°
Fri Oct 16
☁️ Overcast
0in
0in
0in
49° / 26°
Forecast updated Oct 11, 2026, 4:07 AM. Snowfall is modelled at each elevation, so summit totals are usually higher than the base.
We publish a trail map only once we have checked it against the resort's own file, and we do not yet have a verified map for Big Sky. Most resorts release the new season's map between October and December, so this page will fill in as winter approaches. In the meantime, Big Sky has 300 trails and 36 lifts, running from 7,500ft to 11,214ft.