Ennis - Big Sky Airport Weather Forecast

    • 47
    • 78

    Rain Showers Likely

    • 49
    • 81

    Slight Chance Thunderstorms

    • 52
    • 86

    Mostly Sunny

    • 52
    • 86

    Slight Chance Thunderstorms

    • 51
    • 88

    Partly Sunny

    • 51
    • 88

    Mostly Sunny

Today 22 Jul Madison River Valley

Partly cloudy early in the morning then becoming mostly cloudy. Chance of rain Showers early in the Morning, then chance of Thunderstorms in the afternoon. Highs 75 to 80. Northeast Winds 5 to 10 Mph shifting to the southwest 10 to 15 Mph in the afternoon. Chance of precipitation 50 percent.

Tonight 22 Jul Madison River Valley

Cooler. Mostly cloudy with a 50 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows 45 to 50. West Winds 5 to 10 Mph shifting to the north after midnight.

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Ennis - Big Sky Airport Temperature Statistics

July Temperature

Ennis - Big Sky Airport (0 miles)

  • Lowest 5 July, 2025

    42.8 °F

  • Average July

    67.3 °F

  • Highest 14 July, 2025

    93.2 °F

Climate (2020–Present)

Ennis - Big Sky Airport (0 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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