Ennis - Big Sky Airport Weather Forecast

    • 31
    • 42

    Mostly Cloudy

    • 32
    • 49

    Increasing Clouds

    • 28
    • 51

    Mostly Cloudy

    • 27
    • 46

    Partly Sunny

    • 28
    • 47

    Partly Sunny

    • 31
    • 52

    Partly Sunny

    • 31
    • 55

    Mostly Sunny

Today 30 Jan Madison River Valley

Mostly cloudy. Slight chance of snow late in the Morning, then slight chance of rain and snow in the afternoon. Highs in the lower 40s. South Winds 10 to 20 Mph. Chance of precipitation 20 percent.

Tonight 30 Jan Madison River Valley

Breezy. Mostly cloudy. Lows 27 to 33. South Winds 10 to 25 Mph with Gusts to around 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ennis - Big Sky Airport Temperature Statistics

January Temperature

Ennis - Big Sky Airport (0 miles)

  • Lowest 23 January, 2026

    -5.8 °F

  • Average January

    29.1 °F

  • Highest 13 January, 2026

    53.6 °F

Climate (2021–Present)

Ennis - Big Sky Airport (0 miles)

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  • Average Low 2021–2026

    31.7 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    56 °F
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