Mill Lake Weather Forecast

    • 28
    • 44

    Partly Sunny

    • 33
    • 48

    Chance Snow

    • 37
    • 54

    Mostly Sunny

    • 37
    • 56

    Chance Rain

    • 37
    • 54

    Slight Chance Thunderstorms

    • 39
    • 57

    Slight Chance Thunderstorms

Today 23 May Eastern Lemhi County

Partly cloudy. Areas of frost in the morning. A 30 percent chance of rain in the afternoon. Highs in the 60s.

Tonight 23 May Eastern Lemhi County

Mostly cloudy with a 20 percent chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Lows in the mid 30s to lower 40s.

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Mill Lake Temperature Statistics

May Temperature

Salmon, Lemhi County Airport (33.6 miles)

  • Lowest 1 May, 2025

    29.8 °F

  • Average May

    53.3 °F

  • Highest 10 May, 2025

    86 °F

Climate (2020–Present)

Salmon, Lemhi County Airport (33.6 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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