Fish Creek Lake Weather Forecast

    • 45
    • 64

    Mostly Sunny

    • 44
    • 65

    Rain

    • 33
    • 51

    Rain

    • 39
    • 56

    Mostly Sunny

    • 44
    • 63

    Partly Sunny

    • 45
    • 63

    Partly Sunny

Today 5 Sep Gallatin and Madison County Mountains and Centennial Mountains

Sunny. Highs 62 to 72. South Winds up to 10 Mph with Gusts to around 30 Mph increasing to 10 to 15 Mph with Gusts to around 40 Mph in the afternoon.

Tonight 5 Sep Gallatin and Madison County Mountains and Centennial Mountains

Mostly clear. Lows 42 to 48. South Winds 5 to 10 Mph. Gusts up to 35 Mph in the evening.

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  • Temperature Real-Time

Fish Creek Lake Temperature Statistics

September Temperature

Ennis - Big Sky Airport (38.5 miles)

  • Lowest 2 September, 2026

    50 °F

  • Average September

    63.8 °F

  • Highest 1 September, 2026

    78.8 °F

Climate (2021–2026)

Ennis - Big Sky Airport (38.5 miles)

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  • Average Low 2021–2026

    32.1 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    56.4 °F
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