Helena West Side Weather Forecast

    • 54
    • 85

    Increasing Clouds

    • 48
    • 68

    Rain Showers Likely

    • 46
    • 65

    Mostly Cloudy

    • 42
    • 59

    Rain Showers

    • 40
    • 62

    Mostly Sunny

    • 44
    • 66

    Partly Sunny

Today 10 Sep Helena Valley

Mostly sunny. Highs in the lower 80s. Southeast Winds up to 10 Mph shifting to the west with Gusts to around 35 Mph in the afternoon.

Tonight 10 Sep Helena Valley

Mostly cloudy. Rain likely after midnight. Lows around 50. West Winds 5 to 10 Mph. Gusts up to 30 Mph in the evening. Chance of rain 70 percent.

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Helena West Side Temperature Statistics

September Temperature

Helena Regional Airport (5.6 miles)

  • Lowest 3 September, 2026

    46.7 °F

  • Average September

    64.4 °F

  • Highest 1 September, 2026

    85.6 °F

Climate (2021–2026)

Helena Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    59.9 °F
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