Grouse Creek Lake Weather Forecast

    • 49
    • 63

    Rain Showers Likely

    • 51
    • 71

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

    • 47
    • 74

    Mostly Sunny

    • 47
    • 72

    Mostly Sunny

    • 49
    • 72

    Mostly Sunny

Today 17 Aug Lost River Range

Partly sunny. A chance of Showers and Thunderstorms in the afternoon. Some Thunderstorms may produce gusty Winds in the afternoon. Highs 72 to 82.

Tonight 17 Aug Lost River Range

Mostly cloudy with a slight chance of Showers and Thunderstorms in the evening. Then mostly clear after midnight. Some Thunderstorms may produce gusty Winds in the evening. Lows 51 to 59.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grouse Creek Lake Temperature Statistics

August Temperature

Salmon, Lemhi County Airport (49.1 miles)

  • Lowest 8 August, 2025

    42.7 °F

  • Average August

    66.7 °F

  • Highest 12 August, 2025

    95.6 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (49.1 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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