Heart Mountain Weather Forecast

    • 26
    • 33

    Mostly Cloudy

    • 25
    • 35

    Blizzard

    • 13
    • 30

    Blizzard

    • 20
    • 22

    Snow

    • 16
    • 31

    Snow Likely

    • 13
    • 23

    Chance Snow

    • 20
    • 24

    Snow Likely

Today 15 Dec Beaverhead/Lemhi Highlands

Increasing Clouds. Highs 37 to 44.

Tonight 15 Dec Beaverhead/Lemhi Highlands

Mostly cloudy. Lows 22 to 32.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Mountain Temperature Statistics

December Temperature

Rexburg, Rexburg-Madison County Airport (57.2 miles)

  • Lowest 3 December, 2025

    12.9 °F

  • Average December

    34.4 °F

  • Highest 10 December, 2025

    52 °F

Climate (2020–Present)

Rexburg, Rexburg-Madison County Airport (57.2 miles)

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  • Average Low 2020–2025

    33.8 °F

  • Average 2020–2025

    45.8 °F

  • Average High 2020–2025

    57.8 °F
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