Rat Lake Weather Forecast

    • 19
    • 37

    Increasing Clouds

    • 19
    • 36

    Chance Snow

    • 22
    • 37

    Mostly Cloudy

    • 27
    • 40

    Mostly Cloudy

    • 23
    • 42

    Partly Sunny

    • 27
    • 45

    Mostly Cloudy

    • 26
    • 44

    Mostly Cloudy

Today 27 Jan Gallatin and Madison County Mountains and Centennial Mountains

Sunny. Near steady temperature around 30. Southwest Winds 5 to 10 Mph with Gusts to around 25 Mph.

Tonight 27 Jan Gallatin and Madison County Mountains and Centennial Mountains

Partly cloudy in the evening then becoming mostly cloudy. Lows 10 to 22. South Winds 5 to 15 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rat Lake Temperature Statistics

January Temperature

Ennis - Big Sky Airport (24.9 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 (24.9 miles)

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  • Average Low 2021–2026

    31.8 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    56 °F
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