Heart Lake Weather Forecast

    • 26
    • 37

    Chance Rain/Snow

    • 30
    • 41

    Chance Rain/Snow

    • 28
    • 43

    Chance Snow

    • 28
    • 41

    Chance Snow

    • 33
    • 43

    Chance Rain

    • 30
    • 50

    Snow Likely

Today 14 Oct Southern Rocky Mountain Front

Not as cold. Patchy fog in the morning. Mostly cloudy with a 20 percent chance of snow. Highs 30 to 40. East Winds up to 10 Mph.

Tonight 14 Oct Southern Rocky Mountain Front

Mostly cloudy. Slight chance of snow in the Evening, then slight chance of rain and snow after midnight. Patchy fog after midnight. Lows in the mid 20s. East Winds up to 5 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

October Temperature

Helena Regional Airport (47.8 miles)

  • Lowest 6 October, 2025

    24.1 °F

  • Average October

    51.3 °F

  • Highest 10 October, 2025

    75.9 °F

Climate (2020–Present)

Helena Regional Airport (47.8 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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