Helena Weather Forecast

    • 52
    • 74

    Rain Showers

    • 58
    • 71

    Rain Showers Likely

    • 56
    • 76

    Rain Showers Likely

    • 63
    • 74

    Rain Showers Likely

    • 59
    • 78

    Rain Showers Likely

    • 54
    • 73

    Chance Rain Showers

Today 15 Sep Iowa

Mostly cloudy. Numerous Showers in the morning. Highs in the lower 70s. West Winds 5 to 15 Mph. Chance of Showers 70 percent.

Tonight 15 Sep Iowa

Warmer. Showers and scattered Thunderstorms. Near steady temperature in the mid 60s. South Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 90 percent.

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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 11 September, 2026

    52.6 °F

  • Average September

    73 °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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