Echo Lake Weather Forecast

    • 35
    • 47

    Chance Rain/Snow

    • 34
    • 48

    Chance Rain/Snow

    • 32
    • 37

    Snow Showers Likely

    • 35
    • 44

    Slight Chance Rain/Snow

    • 37
    • 51

    Sunny

    • 39
    • 52

    Partly Sunny

    • 37
    • 50

    Slight Chance Rain/Snow

Today 13 Sep Gallatin and Madison County Mountains and Centennial Mountains

Mostly cloudy. Slight chance of rain Showers in the Morning, then chance of rain Showers and slight chance of Thunderstorms in the afternoon. Highs 55 to 65. Southwest Winds up to 10 Mph. Chance of precipitation 40 percent.

Tonight 13 Sep Gallatin and Madison County Mountains and Centennial Mountains

Colder. Partly cloudy. Chance of rain Showers and slight chance of Thunderstorms in the evening. Lows 35 to 45. South Winds up to 10 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Echo Lake Temperature Statistics

September Temperature

Ennis - Big Sky Airport (23.6 miles)

  • Lowest 5 September, 2025

    39.2 °F

  • Average September

    62.4 °F

  • Highest 2 September, 2025

    87.8 °F

Climate (2020–Present)

Ennis - Big Sky Airport (23.6 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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