Heart Lake Weather Forecast

    • 31
    • 39

    Mostly Sunny

    • 31
    • 43

    Partly Sunny

    • 30
    • 40

    Mostly Sunny

    • 32
    • 39

    Rain/Snow Likely

    • 24
    • 35

    Snow

    • 19
    • 27

    Snow

Today 12 Dec Boise Mountains

Areas of fog this morning. Sunny. Highs 41 to 56.

Tonight 12 Dec Boise Mountains

Mostly clear. Lows 21 to 36.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

December Temperature

Hailey, Friedman Memorial Airport (36.7 miles)

  • Lowest 1 December, 2025

    15.8 °F

  • Average December

    28.8 °F

  • Highest 9 December, 2025

    51.8 °F

Climate (2020–Present)

Hailey, Friedman Memorial Airport (36.7 miles)

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  • Average Low 2020–2025

    34.1 °F

  • Average 2020–2025

    42.3 °F

  • Average High 2020–2025

    56 °F
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