Big SkyMT

6800' base · 8983' mid · 11166' summit · Updated 89d ago

<strong>Big Sky</strong> will see some light snow activity, with <strong>4 inches</strong> in the 5-day outlook. The best powder day looks like <strong>Sun May 17</strong> with 3 inches expected (range: 0-10"). Storm flow is from the <strong>N</strong>. SLR around 10:1 points to dense but skiable snow. There is considerable spread among ensemble members, so the actual totals could vary significantly from the expected values.

24 Hours
0.0"
0-0"
48 Hours
0.3"
0-2"
5-Day
3.5"
0-12"
Best Day
3.2"
Sun May 2026-05-17

15-Day Snow Forecast

Wed
May 13
0.0"
0-0"
66/44°F · S 11mph · SLR 5:1
Thu
May 14
0.3"
0-2"
53/29°F · SW 14mph · SLR 7:1
Fri
May 15
0.0"
0-0"
48/27°F · SW 12mph · SLR 7:1
Sat
May 16
0.0"
0-0"
49/29°F · SW 9mph · SLR 7:1
Sun
May 17
3.2"
0-10"
41/21°F · N 6mph · SLR 10:1
Mon
May 18
2.0"
0-13"
30/21°F · SE 7mph · SLR 11:1
Tue
May 19
0.2"
0-2"
38/24°F · SW 7mph · SLR 9:1
Wed
May 20
0.4"
0-3"
42/25°F · SW 6mph · SLR 8:1
Thu
May 21
0.1"
0-3"
47/27°F · S 6mph · SLR 8:1
Fri
May 22
0.0"
0-2"
50/31°F · S 7mph · SLR 7:1

See interactive charts, accuracy data, and hourly forecasts on the full dashboard.

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Forecast powered by GEFS 31-member ensemble with PRISM-calibrated orographic correction. Verified daily against SNOTEL ground observations. © 2026 PowCall.