Helena Weather Forecast

    • 35
    • 62

    Increasing Clouds

    • 42
    • 64

    Chance Rain Showers

    • 46
    • 77

    Chance Rain Showers

    • 40
    • 64

    Mostly Sunny

    • 50
    • 71

    Chance Rain Showers

    • 54
    • 80

    Chance Thunderstorms

Today 10 May Iowa

Sunny in the morning then becoming partly sunny. Highs in the lower 60s. Northwest Winds 5 to 15 Mph.

Tonight 10 May Iowa

Partly cloudy in the evening then clearing. Areas of frost early in the morning. Lows in the mid 30s. North Winds up to 5 Mph. Gusts up to 20 Mph through around midnight.

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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

    49.1 °F

  • Highest 4 May, 2026

    81.6 °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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