Helena West Side Weather Forecast

    • 53
    • 71

    Rain Showers

    • 52
    • 68

    Rain Showers

    • 53
    • 79

    Chance Thunderstorms

    • 55
    • 83

    Slight Chance Thunderstorms

    • 56
    • 83

    Chance Rain Showers

    • 56
    • 84

    Chance Rain Showers

Today 13 Aug Helena Valley

Cooler. Mostly cloudy. Chance of rain Showers in the Morning, then chance of Thunderstorms in the afternoon. Highs in the upper 60s. Northwest Winds 5 to 15 Mph. Chance of precipitation 50 percent.

Tonight 13 Aug Helena Valley

Mostly cloudy with rain Showers and chance of Thunderstorms. Highs in the lower 70s. Lows 47 to 53. Northwest Winds up to 15 Mph with Gusts to around 35 Mph. Chance of precipitation 90 percent.

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Helena West Side Temperature Statistics

August Temperature

Helena Regional Airport (5.6 miles)

  • Lowest 4 August, 2026

    45.6 °F

  • Average August

    71.4 °F

  • Highest 1 August, 2026

    103.6 °F

Climate (2021–2026)

Helena Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    59.9 °F
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