Surprise Lake Weather Forecast

    • 34
    • 54

    Mostly Sunny

    • 38
    • 63

    Sunny

    • 39
    • 64

    Chance Rain Showers

    • 36
    • 52

    Rain Showers Likely

    • 32
    • 48

    Chance Rain/Snow

    • 36
    • 56

    Mostly Sunny

Today 1 May Northwest Beaverhead County

Not as cool. Sunny. Highs 50 to 60. North Winds up to 10 Mph.

Tonight 1 May Northwest Beaverhead County

Mostly clear. Lows 30 to 35. East Winds up to 5 Mph shifting to the south after midnight.

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Surprise Lake Temperature Statistics

May Temperature

Salmon, Lemhi County Airport (50.3 miles)

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  • Average May

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Climate (2020–Present)

Salmon, Lemhi County Airport (50.3 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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