Surprise Lake Weather Forecast

    • 42
    • 63

    Chance Thunderstorms

    • 42
    • 63

    Mostly Sunny

    • 42
    • 68

    Mostly Sunny

    • 45
    • 71

    Slight Chance Thunderstorms

    • 38
    • 65

    Chance Rain Showers

    • 31
    • 51

    Snow Showers Likely

Today 16 Jun Northwest Beaverhead County

Mostly cloudy. A 50 percent chance of Thunderstorms in the afternoon. Highs 65 to 70. South Winds up to 10 Mph shifting to the west in the afternoon.

Tonight 16 Jun Northwest Beaverhead County

Mostly cloudy. Chance of rain Showers and slight chance of Thunderstorms in the Evening, then slight chance of rain Showers after midnight. Lows 40 to 45. Northwest Winds up to 10 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Surprise Lake Temperature Statistics

June Temperature

Salmon, Lemhi County Airport (50.3 miles)

  • Lowest 3 June, 2025

    35.1 °F

  • Average June

    61.4 °F

  • Highest 9 June, 2025

    92.6 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (50.3 miles)

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  • Average Low 2020–2025

    32.2 °F

  • Average 2020–2025

    45.3 °F

  • Average High 2020–2025

    58.1 °F
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