Alton Weather Forecast

    • 48
    • 69

    Rain Showers

    • 51
    • 63

    Thunderstorms

    • 49
    • 66

    Rain Showers

    • 40
    • 64

    Rain Showers

    • 41
    • 59

    Partly Sunny

    • 52
    • 77

    Mostly Sunny

Today 25 Apr Sioux

Partly sunny. A slight chance of Showers this afternoon. Breezy with Highs in the upper 60s. Southeast Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 25 Apr Sioux

A chance of Thunderstorms. A chance of Showers in the Evening, then Showers after midnight. Breezy with Lows in the upper 40s. Southeast Winds 20 to 25 Mph with Gusts up to 40 Mph. Chance of rain near 100 percent.

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Alton Temperature Statistics

April Temperature

Le Mars Municipal Airport (16.8 miles)

  • Lowest 4 April, 2024

    28.4 °F

  • Average April

    50.7 °F

  • Highest 13 April, 2024

    86 °F

Climate (2019–Present)

Le Mars Municipal Airport (16.8 miles)

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  • Average Low 2019–2024

    37.5 °F

  • Average 2019–2024

    48.3 °F

  • Average High 2019–2024

    59.1 °F
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