Salmon Weather Forecast

    • 54
    • 88

    Chance Rain Showers

    • 54
    • 88

    Chance Rain Showers

    • 50
    • 83

    Chance Rain

    • 42
    • 79

    Chance Rain

    • 43
    • 76

    Mostly Sunny

    • 47
    • 81

    Slight Chance Rain

Today 26 Aug Eastern Lemhi County

Mostly cloudy. Patchy smoke late in the morning. Chance of rain Showers and a slight chance of Thunderstorms early in the afternoon. Chance of rain Showers and a slight chance of Thunderstorms with little or no precipitation late in the afternoon. Chance of precipitation 50 percent. Highs in the 80s.

Tonight 26 Aug Eastern Lemhi County

Partly cloudy. A 20 percent chance of rain in the evening. Lows in the 50s.

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Salmon Temperature Statistics

August Temperature

Salmon, Lemhi County Airport (3.7 miles)

  • Lowest 5 August, 2026

    43 °F

  • Average August

    69.5 °F

  • Highest 1 August, 2026

    100 °F

Climate (2021–2026)

Salmon, Lemhi County Airport (3.7 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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