Heart Lake Weather Forecast

    • 47
    • 65

    Sunny

    • 47
    • 67

    Increasing Clouds

    • 52
    • 69

    Mostly Cloudy

    • 53
    • 71

    Mostly Sunny

    • 46
    • 66

    Mostly Sunny

    • 44
    • 61

    Mostly Sunny

    • 49
    • 66

    Mostly Sunny

Today 4 Jul Lower Clark Fork Region

Partly cloudy. Highs in the 80s. West Winds to 15 Mph in the afternoon.

Tonight 4 Jul Lower Clark Fork Region

Mostly clear. Lows in the upper 40s to mid 50s. West Winds to 15 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

July Temperature

Missoula, Missoula International Airport (41 miles)

  • Lowest 2 July, 2026

    45 °F

  • Average July

    61.6 °F

  • Highest 2 July, 2026

    78.1 °F

Climate (2021–2026)

Missoula, Missoula International Airport (41 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    59.7 °F
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