Mormon Mountain Weather Forecast

    • 50
    • 66

    Isolated Thunderstorms

    • 52
    • 68

    Mostly Sunny

    • 58
    • 74

    Partly Sunny

    • 58
    • 73

    Chance Rain Showers

    • 50
    • 67

    Chance Rain Showers

    • 51
    • 66

    Mostly Sunny

Today 18 Aug West Central Mountains

Decreasing Clouds. Isolated Showers this afternoon. Chance of rain 20 percent. Highs 75 to 89.

Tonight 18 Aug West Central Mountains

Mostly clear. Patchy smoke. Lows 48 to 59.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mormon Mountain Temperature Statistics

August Temperature

Salmon, Lemhi County Airport (49.1 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 (49.1 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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