Helena Weather Forecast

    • 49
    • 80

    Mostly Sunny

    • 56
    • 84

    Partly Sunny

    • 52
    • 78

    Partly Sunny

    • 55
    • 81

    Partly Sunny

    • 54
    • 82

    Mostly Sunny

    • 55
    • 82

    Mostly Sunny

Today 28 May Iowa

Partly sunny in the morning then clearing. Highs in the upper 70s. East Winds 5 to 10 Mph.

Tonight 28 May Iowa

Partly cloudy. Lows in the upper 40s. East Winds up to 5 Mph.

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  • 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

    57.2 °F

  • Highest 26 May, 2026

    87.1 °F

Climate (2021–Present)

Lone Rock Tri-County Regional Airport (8.7 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    60.3 °F
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