Alton Weather Forecast

    • 71
    • 87

    Thunderstorms Likely

    • 69
    • 84

    Thunderstorms

    • 69
    • 82

    Rain Showers

    • 71
    • 86

    Thunderstorms Likely

    • 72
    • 88

    Chance Thunderstorms

    • 73
    • 89

    Chance Thunderstorms

    • 73
    • 91

    Slight Chance Thunderstorms

Today 12 Jul Jefferson

Partly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 12 Jul Jefferson

Showers likely with a chance of Thunderstorms this Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 70 percent.

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  • Temperature Real-Time

Alton Temperature Statistics

July Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 2 July, 2026

    72.6 °F

  • Average July

    83.7 °F

  • Highest 1 July, 2026

    96.7 °F

Climate (2021–2026)

Birmingham, Birmingham International Airport (6.2 miles)

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  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    65.6 °F

  • Average High 2021–2026

    76.1 °F
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