Heart Lake Weather Forecast

    • 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 18 Jan Southern Rocky Mountain Front

Partly sunny. A 20 percent chance of snow in the morning. Highs 23 to 31. Northeast Winds up to 10 Mph with Gusts to around 30 Mph.

Tonight 18 Jan Southern Rocky Mountain Front

Partly cloudy. Lows 11 to 17. North Winds up to 5 Mph shifting to the west after midnight.

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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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