Fish Creek Lake Weather Forecast
- 55
- 78
Chance Thunderstorms
- 52
- 75
Rain Showers
- 55
- 74
Chance Thunderstorms
- 56
- 79
Mostly Sunny
- 55
- 80
Mostly Sunny
- 54
- 79
Slight Chance Thunderstorms
Today 21 Jul Gallatin and Madison County Mountains and Centennial Mountains
Partly sunny. Patchy smoke through the day. Slight chance of rain Showers late in the morning. Chance of rain Showers and slight chance of Thunderstorms early in the Afternoon, then chance of Thunderstorms late in the afternoon. Highs 72 to 82. Northeast Winds up to 5 Mph shifting to the north in the afternoon. Chance of precipitation 50 percent.
Tonight 21 Jul Gallatin and Madison County Mountains and Centennial Mountains
Patchy smoke in the evening. Mostly cloudy with a 20 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows 53 to 59. Northeast Winds up to 10 Mph.
Fish Creek Lake Temperature Statistics
July Temperature
Ennis - Big Sky Airport (38.5 miles)
Lowest 1 July, 2026
41 °FAverage July
68.2 °FHighest 12 July, 2026
98.6 °F
Climate (2021–2026)
Ennis - Big Sky Airport (38.5 miles)
Average Low 2021–2026
32 °FAverage 2021–2026
44.4 °FAverage High 2021–2026
56.3 °F