Deep Lake Weather Forecast
- 18
- 38
Blizzard
- 23
- 34
Snow Likely
- 27
- 37
Snow
- 19
- 30
Blizzard
- 20
- 29
Snow Likely
- 25
- 38
Partly Sunny
Today 30 Mar Gallatin and Madison County Mountains and Centennial Mountains
Windy. Mostly sunny late in the morning then becoming mostly cloudy. Slight chance of rain and snow early in the afternoon. Chance of rain and snow late in the afternoon. Highs 42 to 54. Southwest Winds 15 to 30 Mph with Gusts to around 55 Mph. Chance of precipitation 50 percent.
Tonight 30 Mar Gallatin and Madison County Mountains and Centennial Mountains
Colder. Mostly cloudy. Chance of snow in the Evening, then slight chance of snow after midnight. Lows 19 to 27. Northwest Winds 5 to 15 Mph with Gusts to around 40 Mph shifting to the north after midnight. Chance of snow 50 percent.
Deep Lake Temperature Statistics
March Temperature
Ennis - Big Sky Airport (28 miles)
Lowest 15 March, 2026
5 °FAverage March
42.8 °FHighest 19 March, 2026
75.2 °F
Climate (2021–Present)
Ennis - Big Sky Airport (28 miles)
Average Low 2021–2026
32.1 °FAverage 2021–2026
44.5 °FAverage High 2021–2026
56.5 °F