Episode Details

Ski Report for Big Sky Resort, Montana

Daily Ski Conditions for Big Sky Resort, Montana

Craving Lone Mountain powder? Big Sky is serving a mixed December menu right now: plenty of vertical, some fresh flakes over the past week, limited terrain open, and cold mountain temps that are preserving what snow there is—so pick your lines and patience wisely.

The resort reports roughly 76 cm up high and about 20 cm at the base on the official mountain summary, giving a decent early-season cover on higher slopes while the valley snowpack remains thin. Recent snowfall numbers vary by source: Skiresort records show the last measurable snowfall was on December 14, while other trackers note around 0–1 in (0–3 cm) in the past 24–48 hours at different elevations and about 3–4 in across the past 48–72 hours in some forecasts.

Lift and trail access is limited as the mountain builds toward full coverage: roughly 16 of 40 lifts are running and about 38 km (15% of 250 km) of slopes are open according to the resort summary—expect mostly core runs and the valley connector to be available rather than the whole mountain. SnoCountry similarly lists machine-groomed primary surfaces with variable secondary surfaces and a modest number of lifts and trails open for day-to-day operations. Big Sky’s own current-conditions bulletins indicate phased openings (Madison Base services and selected lifts) as they ramp up operations.

If you need a weather snapshot before heading out: mountain temperatures are cold aloft (single digits to teens F negative at times) with valley readings milder but still wintery; some forecasts call for light new snow accumulations over the next 48 hours (a few centimeters/inches) and mixed systems through the next several days—snow at higher elevations with warmer valley air that can produce freeze-thaw cycles. Extended-model guidance and resort communication suggest occasional snow events over the next 5–7 days interspersed with cold, clear periods—keep checking daily forecasts for timing and amounts before planning a powder mission.

On-piste conditions are mostly machine-groomed cruisers where open, with variable conditions off-piste: early-season rocky spots, shallow boot-top pockets in places, and wind-affected benches are likely; when the resort gets fresh snow, Lone Mountain’s big bowls and treed north aspects will hold powder longer but expect tracked lines early after storms. Season-to-date totals differ by reporting station: general sources cite Big Sky’s long-term averages between roughly 249" and 400" depending on which metric you use, and the resort’s own seasonal outlooks and experimental models are optimistic for an above-average 2025–26 season—resort leadership has discussed AI-informed forecasts suggesting a potentially snowy year relative to averages.

Practical tips from locals and lift ops: ride early when groomers are fresh, stick to open runs shown on today’s trail map (closed terrain can hide rocks and stumps), carry a map and check lift status before you drive up, and layer for cold summit temps—wind can make it feel much colder at elevation. If you plan to venture off-piste, go with a partner, carry beacon/shovel/probe, and check avalanche bulletins when the snowpack grows deeper; currently, off-piste exposure is best for experienced parties when fresh accumulations arrive.

Special notices: phased openings mean some signature lifts (like Madison 8) may be closed during early-season operations while the resort ramps up both snowmaking and mountain staffing—confirm which base areas and gondolas are operating before heading out. Webcams and the resort snow phone are good last-minute checks if storms or wind are moving through.

If you want, I can pull the live lift-and-trail map and hourly mountain forecast for the next 48 hours so you can plan the best time to score fresh turns on Lone Mountain.