Helena Weather Forecast

    • 67
    • 84

    Increasing Clouds

    • 67
    • 84

    Thunderstorms

    • 66
    • 84

    Rain Showers Likely

    • 65
    • 82

    Rain Showers Likely

    • 62
    • 80

    Chance Rain Showers

    • 61
    • 80

    Chance Rain Showers

    • 58
    • 78

    Chance Rain Showers

Today 5 Aug Northern St. Lawrence

Sunny. Highs in the mid 80s. Light and variable Winds, becoming southwest around 10 Mph this afternoon.

Tonight 5 Aug Northern St. Lawrence

Partly cloudy. Lows in the upper 60s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Temperature Statistics

August Temperature

Massena, Massena International-Richards Field (5.6 miles)

  • Lowest 1 August, 2026

    61 °F

  • Average August

    70.8 °F

  • Highest 1 August, 2026

    82 °F

Climate (2021–2026)

Massena, Massena International-Richards Field (5.6 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    56 °F
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