Fish Creek Lake Weather Forecast
- 37
- 52
Chance Rain
- 36
- 53
Rain
- 25
- 39
Rain/Snow
- 25
- 37
Partly Sunny
- 27
- 42
Partly Sunny
- 27
- 42
Partly Sunny
Today 21 Oct Gallatin and Madison County Mountains and Centennial Mountains
Mostly sunny. Chance of rain late in the morning. Slight chance of rain in the afternoon. Highs 50 to 60. South Winds up to 10 Mph increasing to 10 to 15 Mph in the afternoon. Gusts up to 30 Mph. Chance of rain 40 percent.
Tonight 21 Oct Gallatin and Madison County Mountains and Centennial Mountains
Mostly clear. Lows 35 to 43. South Winds 5 to 10 Mph with Gusts to around 25 Mph.
Fish Creek Lake Temperature Statistics
October Temperature
Ennis - Big Sky Airport (38.5 miles)
Lowest 13 October, 2026
19.4 °FAverage October
49.3 °FHighest 5 October, 2026
82.4 °F
Climate (2021–2026)
Ennis - Big Sky Airport (38.5 miles)
Average Low 2021–2026
32.1 °FAverage 2021–2026
44.5 °FAverage High 2021–2026
56.6 °F