Helena Weather Forecast

    • 55
    • 68

    Chance Rain Showers

    • 49
    • 68

    Slight Chance Rain Showers

    • 50
    • 68

    Mostly Cloudy

    • 49
    • 68

    Partly Sunny

    • 52
    • 70

    Partly Sunny

    • 56
    • 70

    Rain Showers Likely

Today 24 Sep Iowa

Mostly cloudy. Highs in the mid 60s. East Winds up to 5 Mph.

Tonight 24 Sep Iowa

Cloudy. A 40 percent chance of light rain Showers in the late evening and overnight. Lows in the mid 50s. East 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 14 September, 2026

    42.7 °F

  • Average September

    67.4 °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

    38.7 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    60.4 °F
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