Hancock Lake Weather Forecast

    • 18
    • 23

    Mostly Cloudy

    • 20
    • 31

    Mostly Cloudy

    • 18
    • 32

    Mostly Cloudy

    • 17
    • 32

    Partly Sunny

    • 17
    • 32

    Partly Sunny

    • 19
    • 34

    Partly Sunny

    • 20
    • 38

    Mostly Sunny

Today 30 Jan Centennial Mountains/Island Park

Mostly cloudy. Patchy fog in the morning. A chance of snow in the afternoon. Snow accumulation up to 1 inch. Highs 29 to 36.

Tonight 30 Jan Centennial Mountains/Island Park

Mostly cloudy. Patchy fog. Lows 15 to 25.

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Hancock Lake Temperature Statistics

January Temperature

West Yellowstone (37.3 miles)

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  • Average January

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Climate (2021–Present)

West Yellowstone (37.3 miles)

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  • Average Low 2021–2025

    34 °F
  • Average 2021–2025

    51.3 °F
  • Average High 2021–2025

    66.6 °F
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