Big Sky Resort plans to open its 5,850 acres of skiable terrain on Nov. 25, according to FOX Weather.
The mountain community in the heart of Montana’s Big Sky Country is bracing for a winter shaped by a significant El Niño forecast. While the resort prepares to welcome skiers and snowboarders late this month, the long-term outlook for the Madison Range remains a complex puzzle of competing weather patterns.
Meteorologists are closely watching how a “super El Niño” might alter the traditional winter storm track. FOX Weather meteorologists Stephen Morgan, Bayne Froney, Britta Merwin, and Craig Herrera said that this specific phenomenon typically influences moisture patterns, often favoring wetter conditions further south.
December Averages 57 Inches of Snow
December serves as the first full month of the ski season and is a critical window for building the mountain’s base before the heavy holiday crowds arrive. Historical data provides a benchmark for what the community expects during this period.
According to OnTheSnow, Big Sky averages 57 inches of snow across 16 snowfall days in December. This figure ties March for the snowiest monthly average on record for the area.

However, the upcoming season faces a period of uncertainty. The NOAA forecast for the winter outlook favors warmer-than-average conditions across the northern Rockies. This warmer trend is paired with an increased chance of below-average precipitation across parts of the region, creating a potential conflict for local businesses that rely on heavy snowpack.
The economic stakes for the Big Sky area are high. The local economy is deeply tethered to the success of the winter season, from mountain operations to the residential housing and condo markets nestled around the resort. A warmer, drier winter could impact everything from lift ticket sales to the seasonal employment that sustains the Madison Range community.
The current weather this week offers an early taste of winter, but the total seasonal outcome remains dependent on the storms that have yet to arrive.