Summit Reservoir Weather Forecast

    • 36
    • 56

    Mostly Sunny

    • 40
    • 63

    Mostly Sunny

    • 43
    • 65

    Chance Rain Showers

    • 40
    • 61

    Rain Showers Likely

    • 32
    • 51

    Chance Rain Showers

    • 38
    • 58

    Mostly Sunny

    • 42
    • 64

    Mostly Sunny

Today 1 May Lost River Range

Sunny. Highs 56 to 64.

Tonight 1 May Lost River Range

Mostly clear. Lows 36 to 43.

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Summit Reservoir Temperature Statistics

May Temperature

Salmon, Lemhi County Airport (58.4 miles)

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  • Average May

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Climate (2020–Present)

Salmon, Lemhi County Airport (58.4 miles)

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  • Average Low 2020–2025

    32.2 °F

  • Average 2020–2025

    45.2 °F

  • Average High 2020–2025

    58 °F
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