Ennis - Big Sky Airport Weather Forecast

    • 57
    • 91

    Slight Chance Thunderstorms

    • 55
    • 89

    Slight Chance Thunderstorms

    • 57
    • 93

    Mostly Sunny

    • 58
    • 93

    Mostly Sunny

    • 60
    • 99

    Mostly Sunny

    • 49
    • 93

    Mostly Sunny

Today 28 Jul Madison River Valley

Sunny. Patchy smoke through the day. A 20 percent chance of Thunderstorms in the afternoon. Highs in the lower 90s. South Winds up to 5 Mph shifting to the southwest 5 to 15 Mph in the afternoon.

Tonight 28 Jul Madison River Valley

Mostly clear. A 20 percent chance of rain Showers in the evening. Patchy smoke after midnight. Lows in the upper 50s. Southwest Winds 5 to 10 Mph.

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Ennis - Big Sky Airport Temperature Statistics

July Temperature

Ennis - Big Sky Airport (0 miles)

  • Lowest 1 July, 2026

    41 °F

  • Average July

    68.9 °F

  • Highest 12 July, 2026

    98.6 °F

Climate (2021–2026)

Ennis - Big Sky Airport (0 miles)

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  • Average Low 2021–2026

    32 °F

  • Average 2021–2026

    44.4 °F

  • Average High 2021–2026

    56.3 °F
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