Helena West Side Weather Forecast

    • 33
    • 60

    Becoming Sunny

    • 32
    • 54

    Partly Sunny

    • 37
    • 61

    Mostly Cloudy

    • 44
    • 61

    Chance Rain

    • 31
    • 59

    Chance Rain

    • 26
    • 48

    Partly Sunny

    • 29
    • 55

    Partly Sunny

Today 21 Mar Helena Valley

Windy, cooler. Mostly sunny. A 20 percent chance of rain early in the afternoon. Highs around 60. Northwest Winds 20 to 30 Mph.

Tonight 21 Mar Helena Valley

Colder. Mostly clear. Lows in the lower 30s. Northwest Winds 5 to 15 Mph with Gusts to around 35 Mph shifting to the southwest after midnight.

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Helena West Side Temperature Statistics

March Temperature

Helena Regional Airport (5.6 miles)

  • Lowest 15 March, 2026

    4.6 °F

  • Average March

    39.6 °F

  • Highest 19 March, 2026

    73 °F

Climate (2021–Present)

Helena Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    59.9 °F
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