Diversion Lake Weather Forecast

    • 21
    • 41

    Chance Snow

    • 22
    • 31

    Chance Snow

    • 28
    • 38

    Snow Likely

    • 25
    • 37

    Chance Snow

    • 27
    • 42

    Chance Snow

    • 26
    • 43

    Snow Likely

    • 27
    • 40

    Chance Snow

Today 19 Dec Southern Rocky Mountain Front

Windy. Partly sunny with a 50 percent chance of snow. Patchy blowing snow through the day. Visibility one quarter mile or less at Times. Highs 30 to 38. West Winds 15 to 35 Mph. Gusts up to 75 Mph decreasing to 65 Mph in the afternoon.

Tonight 19 Dec Southern Rocky Mountain Front

Breezy, Colder. Mostly cloudy with a 50 percent chance of snow. Patchy blowing snow. Visibility one quarter mile or less at Times. Near steady temperature around 18. West Winds 15 to 25 Mph with Gusts to around 55 Mph.

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Diversion Lake Temperature Statistics

December Temperature

Great Falls, Great Falls International Airport (62.8 miles)

  • Lowest 12 December, 2025

    3.9 °F

  • Average December

    34.7 °F

  • Highest 14 December, 2025

    61 °F

Climate (2020–Present)

Great Falls, Great Falls International Airport (62.8 miles)

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  • Average Low 2020–2025

    34.1 °F

  • Average 2020–2025

    46.6 °F

  • Average High 2020–2025

    58.6 °F
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