Helena Weather Forecast

    • 55
    • 79

    Mostly Cloudy

    • 46
    • 81

    Chance Rain Showers

    • 36
    • 68

    Mostly Sunny

    • 39
    • 66

    Mostly Sunny

    • 56
    • 77

    Slight Chance Rain Showers

    • 58
    • 82

    Chance Rain Showers

Today 17 Sep Northern St. Lawrence

Partly sunny. Highs in the upper 70s. Light and variable Winds.

Tonight 17 Sep Northern St. Lawrence

Partly cloudy. Lows in the mid 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Temperature Statistics

September Temperature

Massena, Massena International-Richards Field (5.6 miles)

  • Lowest 12 September, 2025

    37.9 °F

  • Average September

    60.2 °F

  • Highest 4 September, 2025

    84 °F

Climate (2020–Present)

Massena, Massena International-Richards Field (5.6 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    46.7 °F

  • Average High 2020–2025

    56.3 °F
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