Hirschy Reservoir Weather Forecast

    • 24
    • 51

    Snow Likely

    • 20
    • 39

    Partly Sunny

    • 22
    • 50

    Mostly Sunny

    • 25
    • 54

    Partly Sunny

    • 26
    • 51

    Partly Sunny

    • 29
    • 53

    Rain/Snow Likely

    • 22
    • 44

    Rain/Snow Likely

Today 19 Oct Northwest Beaverhead County

Breezy. Rain and snow late in the Morning, then rain and slight chance of snow in the afternoon. New snow accumulation of 2 to 5 Inches. Snow level 7500 feet. Highs 40 to 50. Southwest Winds 15 to 25 Mph. Chance of precipitation near 100 percent.

Tonight 19 Oct Northwest Beaverhead County

Breezy, Colder. Mostly cloudy with a 50 percent chance of snow. Lows 20 to 25. West Winds 15 to 25 Mph.

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Hirschy Reservoir Temperature Statistics

October Temperature

Salmon, Lemhi County Airport (31.7 miles)

  • Lowest 6 October, 2025

    27 °F

  • Average October

    48.6 °F

  • Highest 10 October, 2025

    78.1 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (31.7 miles)

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  • Average Low 2020–2025

    32.3 °F

  • Average 2020–2025

    45.3 °F

  • Average High 2020–2025

    58.3 °F
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