Louise Lake Weather Forecast

    • 45
    • 64

    Increasing Clouds

    • 42
    • 62

    Mostly Cloudy

    • 43
    • 60

    Partly Sunny

    • 40
    • 57

    Chance Thunderstorms

    • 40
    • 56

    Chance Thunderstorms

    • 36
    • 52

    Chance Thunderstorms

Today 6 Sep Gallatin and Madison County Mountains and Centennial Mountains

Sunny. Haze through the day. Areas of smoke in the afternoon. Highs 65 to 75. Southwest Winds up to 10 Mph.

Tonight 6 Sep Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy with a 20 percent chance of Thunderstorms. Areas of smoke in the evening. Haze through the night. Lows 45 to 55. South Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Louise Lake Temperature Statistics

September Temperature

Ennis - Big Sky Airport (29.2 miles)

  • Lowest 1 September, 2025

    46.4 °F

  • Average September

    64.7 °F

  • Highest 2 September, 2025

    87.8 °F

Climate (2020–Present)

Ennis - Big Sky Airport (29.2 miles)

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  • Average Low 2020–2025

    31.3 °F

  • Average 2020–2025

    43.7 °F

  • Average High 2020–2025

    55.7 °F
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