Heart Lake Weather Forecast

    • 41
    • 63

    Increasing Clouds

    • 35
    • 59

    Mostly Cloudy

    • 31
    • 46

    Chance Rain/Snow

    • 38
    • 56

    Mostly Cloudy

    • 38
    • 55

    Rain Showers Likely

    • 37
    • 52

    Rain Likely

Today 5 Jun Southern Rocky Mountain Front

Warmer, sunny. Highs 56 to 68. Southwest Winds 5 to 15 Mph. Gusts up to 35 Mph increasing to 45 Mph in the afternoon.

Tonight 5 Jun Southern Rocky Mountain Front

Partly cloudy. Highs 57 to 69. Lows 34 to 44. West Winds up to 20 Mph with Gusts to around 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Lake Temperature Statistics

June Temperature

Helena Regional Airport (47.8 miles)

  • Lowest 1 June, 2026

    41.6 °F

  • Average June

    50.8 °F

  • Highest 2 June, 2026

    57.9 °F

Climate (2021–Present)

Helena Regional Airport (47.8 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    60.1 °F
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