Helena Weather Forecast

    • 52
    • 74

    Decreasing Clouds

    • 41
    • 67

    Mostly Sunny

    • 45
    • 64

    Chance Rain Showers

    • 44
    • 64

    Partly Sunny

    • 43
    • 62

    Partly Sunny

    • 45
    • 65

    Partly Sunny

Today 17 Sep Northern St. Lawrence

Patchy dense fog this morning. Partly sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 17 Sep Northern St. Lawrence

Partly cloudy until Midnight, then clearing. Patchy dense fog after midnight. Lows in the lower 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, 2026

    44.7 °F

  • Average September

    65.1 °F

  • Highest 2 September, 2026

    81.6 °F

Climate (2021–2026)

Massena, Massena International-Richards Field (5.6 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    55.9 °F
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