Alton Weather Forecast

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    Rain Showers

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    Rain Showers

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    Rain Showers

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    Rain Showers Likely

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    Rain Showers Likely

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    Rain Showers

Today 24 May Jefferson

Showers likely with a slight chance of Thunderstorms in the Morning, then Showers with Thunderstorms likely in the afternoon. Highs in the lower 80s. South Winds around 5 Mph. Chance of rain 80 percent.

Tonight 24 May Jefferson

Mostly cloudy with a 50 percent chance of Showers. Near steady temperature in the upper 60s. Southeast Winds around 5 Mph.

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Alton Temperature Statistics

May Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 3 May, 2026

    41.6 °F

  • Average May

    69.6 °F

  • Highest 17 May, 2026

    90.6 °F

Climate (2021–Present)

Birmingham, Birmingham International Airport (6.2 miles)

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  • Average Low 2021–2026

    55.5 °F

  • Average 2021–2026

    65.5 °F

  • Average High 2021–2026

    76 °F
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