Helena Weather Forecast

    • 56
    • 86

    Chance Thunderstorms

    • 56
    • 84

    Chance Thunderstorms

    • 54
    • 81

    Chance Rain Showers

    • 53
    • 83

    Mostly Sunny

    • 53
    • 84

    Chance Thunderstorms

    • 52
    • 80

    Slight Chance Thunderstorms

Today 31 Jul Helena Valley

Partly cloudy. A 40 percent chance of Thunderstorms in the afternoon. Highs 85 to 90. Northeast Winds up to 10 Mph.

Tonight 31 Jul Helena Valley

Mostly cloudy with a 50 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the mid 50s. North Winds 5 to 10 Mph shifting to the west after midnight.

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  • Temperature Forecast NOAA

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Helena Temperature Statistics

July Temperature

Helena Regional Airport (1.9 miles)

  • Lowest 5 July, 2025

    49.6 °F

  • Average July

    71.3 °F

  • Highest 8 July, 2025

    97.6 °F

Climate (2020–Present)

Helena Regional Airport (1.9 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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