Fortress Mountain Weather Forecast

    • 43
    • 62

    Isolated Thunderstorms

    • 37
    • 59

    Chance Rain Showers

    • 40
    • 53

    Chance Thunderstorms

    • 40
    • 57

    Slight Chance Thunderstorms

    • 42
    • 54

    Breezy

    • 44
    • 58

    Breezy

    • 41
    • 57

    Breezy

Today 1 Aug Absaroka Mountains

Partly cloudy with scattered Showers and Thunderstorms. Breezy. Near steady temperature in the upper 60s. Southwest Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 30 percent.

Tonight 1 Aug Absaroka Mountains

Partly cloudy this Evening, then clearing. Breezy with Lows in the mid 40s. West Winds 15 to 20 Mph with Gusts up to 30 Mph.

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Fortress Mountain Temperature Statistics

August Temperature

Yellowstone Lake (33.6 miles)

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  • Average August

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Climate (2020–Present)

Yellowstone Lake (33.6 miles)

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  • Average Low 2020–2025

    22.3 °F

  • Average 2020–2025

    35.2 °F

  • Average High 2020–2025

    48 °F
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