Basin Lake Weather Forecast

    • 51
    • 63

    Partly Sunny

    • 50
    • 64

    Mostly Sunny

    • 50
    • 65

    Mostly Sunny

    • 50
    • 64

    Mostly Sunny

    • 50
    • 63

    Mostly Sunny

    • 49
    • 61

    Slight Chance Thunderstorms

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    • 57

    Chance Rain Showers

Today 31 Aug Eastern Lemhi County

Mostly sunny. Areas of smoke until late afternoon. Haze in the afternoon. Highs in the upper 70s to mid 80s.

Tonight 31 Aug Eastern Lemhi County

Partly cloudy. Haze and Areas of smoke. Lows in the upper 40s to mid 50s. Northeast Winds to 15 Mph in the evening.

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Basin Lake Temperature Statistics

August Temperature

Salmon, Lemhi County Airport (18.6 miles)

  • Lowest 8 August, 2025

    42.7 °F

  • Average August

    68.3 °F

  • Highest 19 August, 2025

    100.7 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (18.6 miles)

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  • Average Low 2020–2025

    32.2 °F

  • Average 2020–2025

    45.3 °F

  • Average High 2020–2025

    58.3 °F
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