Black Lake Weather Forecast

    • 43
    • 62

    Becoming Sunny

    • 45
    • 63

    Mostly Sunny

    • 48
    • 69

    Partly Sunny

    • 39
    • 60

    Mostly Cloudy

    • 38
    • 53

    Mostly Cloudy

    • 37
    • 54

    Partly Sunny

Today 22 Sep Southern Clearwater Mountains

Partly cloudy. Highs 64 to 79.

Tonight 22 Sep Southern Clearwater Mountains

Partly cloudy. Lows in the upper 30s to lower 50s.

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Black Lake Temperature Statistics

September Temperature

Salmon, Lemhi County Airport (47.8 miles)

  • Lowest 15 September, 2026

    35.1 °F

  • Average September

    57.8 °F

  • Highest 10 September, 2026

    82.9 °F

Climate (2021–2026)

Salmon, Lemhi County Airport (47.8 miles)

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  • Average Low 2021–2026

    33.1 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    59.1 °F
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