Heart Lake Weather Forecast

    • 47
    • 65

    Chance Rain Showers

    • 46
    • 59

    Rain Likely

    • 43
    • 55

    Rain Showers

    • 43
    • 57

    Rain Showers

    • 47
    • 60

    Slight Chance Thunderstorms

    • 47
    • 61

    Slight Chance Thunderstorms

Today 12 Aug Western Lemhi County

Partly cloudy. Patchy smoke. Highs in the 80s.

Tonight 12 Aug Western Lemhi County

Partly cloudy. Patchy smoke in the Evening, then Areas of smoke after midnight. Lows in the 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

August Temperature

Salmon, Lemhi County Airport (34.2 miles)

  • Lowest 5 August, 2026

    43 °F

  • Average August

    70.7 °F

  • Highest 1 August, 2026

    100 °F

Climate (2021–2026)

Salmon, Lemhi County Airport (34.2 miles)

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  • Average Low 2021–2026

    33 °F

  • Average 2021–2026

    46 °F

  • Average High 2021–2026

    59 °F
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