Helena Weather Forecast

    • 56
    • 85

    Chance Rain Showers

    • 64
    • 83

    Rain Showers

    • 61
    • 84

    Rain Showers

    • 46
    • 77

    Chance Rain Showers

    • 41
    • 63

    Partly Sunny

    • 44
    • 67

    Partly Sunny

Today 16 May Iowa

Partly sunny in the morning then clearing. Highs in the mid 80s. West Winds 5 to 10 Mph.

Tonight 16 May Iowa

Partly cloudy in the evening then becoming mostly cloudy. Slight chance of Thunderstorms through around midnight. Chance of light rain Showers until early Morning, then light rain Showers likely and slight chance of Thunderstorms early in the morning. Lows in the upper 50s. East Winds up to 10 Mph. Chance of precipitation 70 percent.

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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

    51.1 °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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