East Helena Weather Forecast

    • 49
    • 75

    Slight Chance Rain Showers

    • 50
    • 77

    Slight Chance Thunderstorms

    • 53
    • 77

    Rain Showers

    • 45
    • 67

    Rain Showers

    • 43
    • 71

    Partly Sunny

    • 47
    • 75

    Partly Sunny

    • 49
    • 78

    Slight Chance Rain Showers

Today 4 Sep Helena Valley

Mostly sunny. A 20 percent chance of Thunderstorms late in the afternoon. Near steady temperature in the lower 70s. West Winds up to 10 Mph.

Tonight 4 Sep Helena Valley

Mostly cloudy then becoming partly cloudy in the late evening and early morning then becoming mostly cloudy. Slight chance of Thunderstorms early in the evening. Slight chance of rain Showers in the late evening and overnight. Lows in the upper 40s. West Winds 5 to 10 Mph. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

East Helena Temperature Statistics

September Temperature

Helena Regional Airport (3.1 miles)

  • Lowest 1 September, 2026

    48.7 °F

  • Average September

    64 °F

  • Highest 1 September, 2026

    85.6 °F

Climate (2021–2026)

Helena Regional Airport (3.1 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    60 °F
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