Big Sky January Skiing
Big Sky snow in January
- Snow quantity at Big Sky
- Snow quality at Big Sky
- How much snow is required for proper terrain coverage at Big Sky—steeper resorts require more snow to get 100% open.
- Big Sky's snow frequency (standard deviation)
- Big Sky's elevation
- Big Sky's latitude
- Big Sky's slope aspects - more north-facing slopes protect snow later into winter
Big Sky this winter: El Niño
NOAA's latest reading shows strong El Niño conditions heading into 2026–27. Over 40 winters, El Niño winters have brought Big Sky 6% less snow than average, and 9% less snow in the strongest ones. Less snow: a clear, consistent drop in snow.
How El Niño affects Big Sky → · El Niño and Montana, Idaho & Wyoming ski resorts
Big Sky in January, by the numbers
By ZRankings' snow data, Big Sky's January snow scores 51 out of 100, its 4th-best month, 64th of the 220 North American resorts we track. Over 40 winters of weather data, it snows or rains on about 26% of January days, the sun reaches 75% of its clear-sky potential, and mid-mountain highs average 19°F with lows near 4°F.
| High | Low | |
|---|---|---|
| Summit | 12°F | -3°F |
| Mid-mountain | 19°F | 4°F |
| Base | 25°F | 10°F |
Passes for 2026-27: Ikon Pass (7 days), Mountain Collective (2 days). Compare passes.
What matters when it comes to snow for January skiing:
January at Big Sky, or any ski resort, for that matter, is the beginning of the 'safe bet' season. Booking a ski trip in December can be tricky, as even Utah's Cottonwood Canyons can be wanting for snow at that time of the year. But by January, most mountains have begun to fill in and booking a trip should be considered more of a sure thing.
January is also the time when ski resorts that possess large amounts of south-facing and east-facing terrain tend to be at their peak. The dark January days and low sun angles during this time in North America let areas such as Montana's Whitefish, which has a lot of south-facing terrain, ski at its best. The January sun isn't powerful enough, usually, to push the slopes into the kinds of freeze-thaw cycles that happen with regularity later in the season.
January is when the coldest winter storms typially happen, so this is when skiers will want to pack their mitts instead of gloves and their ski knickers in addition to their Gore-Tex pants. Coats that combine insulation and waterproof membranes—often too hot to wear in March–shine during January. This is the month to chase fluffy and chalky snow. To understand more of what makes a ski resort peak in January, consult our snow rankings page.
Crowds After the New Year's holiday and before MLK weekend is also a great time to ski for those looking to avoid crowds. It's often the quietest time of the year outside of early and mid-December.