Darkhorse Lake Weather Forecast

    • 45
    • 59

    Rain Showers Likely

    • 48
    • 65

    Mostly Sunny

    • 48
    • 71

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

    • 43
    • 65

    Mostly Sunny

    • 45
    • 66

    Mostly Sunny

Today 17 Aug Northwest Beaverhead County

Partly cloudy early in the morning then becoming mostly cloudy. Slight chance of rain Showers early in the Morning, then chance of Thunderstorms in the afternoon. Highs 65 to 75. Southwest Winds 5 to 15 Mph. Chance of precipitation 50 percent.

Tonight 17 Aug Northwest Beaverhead County

Mostly cloudy with a 20 percent chance of Thunderstorms in the Evening, then mostly clear after midnight. Lows 45 to 50. South Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Darkhorse Lake Temperature Statistics

August Temperature

Salmon, Lemhi County Airport (14.9 miles)

  • Lowest 8 August, 2025

    42.7 °F

  • Average August

    67.1 °F

  • Highest 12 August, 2025

    95.6 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (14.9 miles)

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  • Average Low 2020–2025

    32.2 °F

  • Average 2020–2025

    45.3 °F

  • Average High 2020–2025

    58.2 °F
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