Helena Weather Forecast

    • 75
    • 92

    Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

    • 69
    • 90

    Chance Rain Showers

    • 66
    • 85

    Chance Rain Showers

    • 66
    • 84

    Chance Rain Showers

    • 65
    • 83

    Chance Rain Showers

Today 1 Jul Northern St. Lawrence

Partly sunny. A slight chance of Showers and Thunderstorms this Morning, then a chance of Showers and Thunderstorms this afternoon. Hot with Highs in the lower 90s. Southwest Winds 10 to 15 Mph. Chance of rain 30 percent. Heat index Values up to 102.

Tonight 1 Jul Northern St. Lawrence

Partly cloudy. A chance of Showers and Thunderstorms until midnight. Humid with Lows in the mid 70s. Southwest Winds 10 to 15 Mph. Chance of rain 30 percent. Heat index Values in the upper 90s until midnight.

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Helena Temperature Statistics

July Temperature

Massena, Massena International-Richards Field (5.6 miles)

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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

    46.1 °F

  • Average High 2021–2026

    55.8 °F
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