Heart Lake Weather Forecast

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    • 34

    Blizzard

    • 28
    • 34

    Blizzard

    • 33
    • 35

    Rain/Snow

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    • 35

    Snow

    • 30
    • 35

    Chance Rain/Snow

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    • 34

    Snow Likely

Today 8 Dec Lower Clark Fork Region

Rain likely through the day. Areas of snow in the Morning, then snow likely in the afternoon. Chance of precipitation near 100 percent. No snow accumulation. Highs in the upper 30s to mid 40s. South Winds to 15 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 8 Dec Lower Clark Fork Region

Rain likely. Chance of rain near 100 percent. Lows in the 30s to lower 40s. Windy with southwest Winds 20 to 30 Mph with Gusts to around 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

December Temperature

Missoula, Missoula International Airport (41 miles)

  • Lowest 1 December, 2025

    17.1 °F

  • Average December

    29.9 °F

  • Highest 6 December, 2025

    37.9 °F

Climate (2020–Present)

Missoula, Missoula International Airport (41 miles)

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  • Average Low 2020–2025

    35.8 °F

  • Average 2020–2025

    47.3 °F

  • Average High 2020–2025

    59.4 °F
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