Helena Weather Forecast

    • 53
    • 67

    Mostly Cloudy

    • 53
    • 76

    Slight Chance Rain Showers

    • 52
    • 79

    Mostly Sunny

    • 58
    • 86

    Partly Sunny

    • 59
    • 87

    Partly Sunny

    • 59
    • 87

    Chance Rain Showers

Today 22 May Iowa

Partly sunny. Chance of Sprinkles in the morning. Highs in the mid 60s. East Winds 10 to 15 Mph.

Tonight 22 May Iowa

Mostly cloudy. Lows in the lower 50s. East Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Helena Temperature Statistics

May Temperature

Lone Rock Tri-County Regional Airport (8.7 miles)

  • Lowest 6 May, 2026

    27.6 °F

  • Average May

    55.2 °F

  • Highest 16 May, 2026

    85.6 °F

Climate (2021–Present)

Lone Rock Tri-County Regional Airport (8.7 miles)

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  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    60.3 °F
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