Helena Weather Forecast

    • 59
    • 86

    Partly Sunny

    • 60
    • 86

    Partly Sunny

    • 59
    • 85

    Slight Chance Thunderstorms

    • 59
    • 83

    Chance Thunderstorms

    • 56
    • 75

    Chance Thunderstorms

    • 55
    • 72

    Chance Rain Showers

Today 15 Sep Iowa

Mostly sunny. Highs in the mid 80s. Southeast Winds up to 10 Mph.

Tonight 15 Sep Iowa

Mostly clear. Lows in the lower 60s. Southeast Winds up to 10 Mph.

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  • Temperature Real-Time

Helena Temperature Statistics

September Temperature

Lone Rock Tri-County Regional Airport (8.7 miles)

  • Lowest 7 September, 2025

    37.9 °F

  • Average September

    59.7 °F

  • Highest 12 September, 2025

    84 °F

Climate (2020–Present)

Lone Rock Tri-County Regional Airport (8.7 miles)

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  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    59.9 °F
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