Marmot BasinAB

5570' base · 7070' mid · 8570' summit · Updated 6h ago

<strong>Marmot Basin</strong> is looking at a significant snowfall event, with the GEFS ensemble showing <strong>17 inches</strong> expected between Fri and Sat. The best powder day looks like <strong>Sat Sep 26</strong> with 15 inches expected (range: 0-21"). Storm flow is from the <strong>S</strong>. SLR around 8:1 points to dense but skiable snow. Ensemble agreement is relatively tight, giving moderate-to-high confidence in this outlook.

24 Hours
1.0"
up to 2"
48 Hours
16.0"
up to 22"
5-Day
17.2"
up to 25"
Best Day
15.0"
Sat Sep 2026-09-26

15-Day Snow Forecast

FriToday
Sep 25
1.0"
up to 2"
37/32°F · S 5mph · SLR 7:1
Sat
Sep 26
15.0"
up to 21"
34/28°F · SW 6mph · SLR 10:1
Sun
Sep 27
0.8"
up to 1"
29/20°F · SW 7mph · SLR 11:1
Mon
Sep 28
0.0"
up to 0"
33/22°F · SW 7mph · SLR 10:1
Tue
Sep 29
0.4"
up to 2"
36/27°F · SW 10mph · SLR 10:1
Wed
Sep 30
2.8"
up to 9"
29/24°F · SW 8mph · SLR 10:1
Thu
Oct 1
0.5"
up to 1"
29/21°F · S 6mph · SLR 11:1
Fri
Oct 2
0.6"
up to 5"
29/23°F · SW 6mph · SLR 11:1
Sat
Oct 3
0.3"
up to 2"
30/20°F · SW 4mph · SLR 11:1

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