Heart Lake Weather Forecast

    • 18
    • 26

    Becoming Sunny

    • 30
    • 43

    Partly Sunny

    • 28
    • 45

    Partly Sunny

    • 31
    • 41

    Chance Snow

    • 26
    • 40

    Snow Likely

    • 24
    • 35

    Chance Snow

Today 26 Mar Lower Clark Fork Region

Partly cloudy. Highs in the upper 30s to mid 40s. West Winds 15 to 25 Mph with Gusts to around 30 Mph.

Tonight 26 Mar Lower Clark Fork Region

Mostly clear. Lows in the 20s. Southwest Winds to 15 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

March Temperature

Missoula, Missoula International Airport (41 miles)

  • Lowest 15 March, 2026

    17.7 °F

  • Average March

    41.2 °F

  • Highest 20 March, 2026

    75.7 °F

Climate (2021–Present)

Missoula, Missoula International Airport (41 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    59.8 °F
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