Helena Weather Forecast

    • 56
    • 82

    Slight Chance Rain Showers

    • 52
    • 78

    Sunny

    • 62
    • 80

    Chance Rain Showers

    • 54
    • 79

    Chance Rain Showers

    • 54
    • 74

    Rain Showers Likely

    • 57
    • 76

    Rain Showers Likely

Today 9 Sep Iowa

Cloudy with a 20 percent chance of light Showers and Thunderstorms in the Morning, then partly sunny in the late morning and afternoon. Highs in the lower 80s. West Winds up to 10 Mph.

Tonight 9 Sep Iowa

Cooler. Mostly clear. Lows in the upper 50s. Northwest Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Temperature Statistics

September Temperature

Lone Rock Tri-County Regional Airport (8.7 miles)

  • Lowest 6 September, 2026

    61 °F

  • Average September

    76.6 °F

  • Highest 1 September, 2026

    89.7 °F

Climate (2021–2026)

Lone Rock Tri-County Regional Airport (8.7 miles)

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  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    60.4 °F
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