Helena Weather Forecast

    • 63
    • 92

    Mostly Sunny

    • 64
    • 93

    Mostly Cloudy

    • 65
    • 92

    Slight Chance Thunderstorms

    • 67
    • 88

    Chance Thunderstorms

    • 66
    • 83

    Chance Rain Showers

    • 62
    • 83

    Chance Rain Showers

Today 18 Sep Lawrence

Sunny. Highs in the lower 90s. Southeast Winds around 5 Mph.

Tonight 18 Sep Lawrence

Mostly clear. Lows in the lower 60s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Temperature Statistics

September Temperature

Mount Carmel, Mount Carmel Municipal Airport (7.5 miles)

  • Lowest 8 September, 2025

    42.1 °F

  • Average September

    69.6 °F

  • Highest 14 September, 2025

    95.5 °F

Climate (2020–Present)

Mount Carmel, Mount Carmel Municipal Airport (7.5 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    67.7 °F
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