Heart Lake Weather Forecast

    • 19
    • 34

    Increasing Clouds

    • 13
    • 28

    Decreasing Clouds

    • 19
    • 30

    Partly Sunny

    • 13
    • 30

    Slight Chance Snow

    • 15
    • 24

    Partly Sunny

    • 9
    • 29

    Snow Likely

    • -4
    • 15

    Snow Likely

Today 17 Jan Southern Rocky Mountain Front

Not as cold. Sunny. Near steady temperature in the lower 30s. West Winds 10 to 20 Mph with Gusts to around 45 Mph.

Tonight 17 Jan Southern Rocky Mountain Front

Mostly clear until early morning then becoming mostly cloudy. Lows 16 to 22. Northwest Winds 5 to 15 Mph with Gusts to around 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

January Temperature

Helena Regional Airport (47.8 miles)

  • Lowest 8 January, 2026

    19 °F

  • Average January

    38 °F

  • Highest 14 January, 2026

    57.9 °F

Climate (2021–Present)

Helena Regional Airport (47.8 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    59.6 °F
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