Ennis - Big Sky Airport Weather Forecast

    • 48
    • 80

    Slight Chance Thunderstorms

    • 51
    • 86

    Mostly Sunny

    • 51
    • 87

    Chance Thunderstorms

    • 50
    • 87

    Chance Thunderstorms

    • 51
    • 88

    Mostly Sunny

    • 51
    • 90

    Mostly Sunny

Today 23 Jul Madison River Valley

Patchy fog in the morning. Sunny in the Morning, then partly cloudy with a 20 percent chance of Thunderstorms in the afternoon. Highs 75 to 80. South Winds up to 5 Mph shifting to the northwest 5 to 15 Mph in the afternoon.

Tonight 23 Jul Madison River Valley

Mostly clear. Lows 45 to 50. North Winds 5 to 10 Mph shifting to the south 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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