Helena Regional Airport Weather Forecast

    • 56
    • 91

    Mostly Sunny

    • 52
    • 84

    Mostly Sunny

    • 50
    • 79

    Mostly Sunny

    • 51
    • 83

    Mostly Sunny

    • 54
    • 84

    Partly Sunny

    • 54
    • 85

    Mostly Sunny

Today 20 Aug Helena Valley

Partly cloudy with slight chance of Showers in the Morning, then sunny with slight chance of Thunderstorms in the afternoon. Haze in the afternoon. Some Thunderstorms may produce gusty Winds in the afternoon. Highs around 90. Northwest Winds up to 10 Mph. Chance of precipitation 20 percent.

Tonight 20 Aug Helena Valley

Partly cloudy. A 40 percent chance of Thunderstorms in the evening. Areas of smoke in the evening. Haze through the night. Some Thunderstorms may produce gusty Winds in the evening. Lows in the mid 50s. West Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Regional Airport Temperature Statistics

August Temperature

Helena Regional Airport (0 miles)

  • Lowest 7 August, 2025

    49.6 °F

  • Average August

    70 °F

  • Highest 12 August, 2025

    95.6 °F

Climate (2020–Present)

Helena Regional Airport (0 miles)

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  • Average Low 2020–2025

    36 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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