Big Sky Weather Forecast
- 11
- 21
Increasing Clouds
- 9
- 23
Partly Sunny
- 17
- 26
Snow
- 12
- 25
Snow Likely
- 12
- 24
Partly Sunny
- 19
- 26
Chance Snow
Today 29 Nov Gallatin and Madison County Mountains and Centennial Mountains
Mostly sunny. Highs 16 to 24. Southwest Winds up to 10 Mph.
Tonight 29 Nov Gallatin and Madison County Mountains and Centennial Mountains
Not as cold. Mostly cloudy. Near steady temperature around 13. Southeast Winds up to 10 Mph.
Big Sky Temperature Statistics
November Temperature
Ennis - Big Sky Airport (13.7 miles)
Lowest 25 November, 2025
14 °FAverage November
43.1 °FHighest 1 November, 2025
64.4 °F
Climate (2020–Present)
Ennis - Big Sky Airport (13.7 miles)
Average Low 2020–2025
31.5 °FAverage 2020–2025
43.9 °FAverage High 2020–2025
55.8 °F