Big Sky Resort Weather Forecast
- 47
- 65
Slight Chance Thunderstorms
- 51
- 73
Mostly Sunny
- 51
- 71
Chance Thunderstorms
- 50
- 72
Chance Thunderstorms
- 50
- 74
Mostly Sunny
- 50
- 75
Mostly Sunny
Today 23 Jul Gallatin and Madison County Mountains and Centennial Mountains
Sunny in the Morning, then partly cloudy with a 20 percent chance of Thunderstorms in the afternoon. Highs 65 to 75. West Winds 5 to 15 Mph.
Tonight 23 Jul Gallatin and Madison County Mountains and Centennial Mountains
Mostly clear. Lows 45 to 50. North Winds 5 to 10 Mph shifting to the northeast after midnight.
Big Sky Resort Temperature Statistics
July Temperature
Ennis - Big Sky Airport (11.8 miles)
Lowest 5 July, 2025
42.8 °FAverage July
67.3 °FHighest 14 July, 2025
93.2 °F
Climate (2020–Present)
Ennis - Big Sky Airport (11.8 miles)
Average Low 2020–2025
31.3 °FAverage 2020–2025
43.7 °FAverage High 2020–2025
55.7 °F