Alton Weather Forecast

    • 70
    • 87

    Thunderstorms Likely

    • 66
    • 88

    Partly Sunny

    • 68
    • 88

    Mostly Sunny

    • 70
    • 92

    Mostly Sunny

    • 71
    • 92

    Mostly Sunny

    • 70
    • 91

    Partly Sunny

    • 71
    • 90

    Chance Thunderstorms

Today 1 Jul Jefferson

Showers and Thunderstorms. Highs in the upper 80s. West Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 1 Jul Jefferson

Mostly cloudy. Showers and Thunderstorms likely this evening. Lows around 70. West Winds around 5 Mph this Evening, becoming light and variable. Chance of rain 70 percent.

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Alton Temperature Statistics

July Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest

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  • Average July

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Climate (2020–Present)

Birmingham, Birmingham International Airport (6.2 miles)

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  • Average Low 2020–2025

    55.4 °F

  • Average 2020–2025

    65.2 °F

  • Average High 2020–2025

    75.5 °F
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