Alton Weather Forecast

    • 72
    • 94

    Sunny

    • 72
    • 94

    Mostly Sunny

    • 67
    • 92

    Sunny

    • 68
    • 91

    Sunny

    • 69
    • 93

    Mostly Sunny

    • 69
    • 92

    Mostly Sunny

Today 14 Sep Jefferson

Sunny. Near steady temperature in the mid 90s. Northeast Winds around 5 Mph.

Tonight 14 Sep Jefferson

Mostly clear. Lows in the lower 70s. East Winds around 5 Mph.

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Alton Temperature Statistics

September Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 10 September, 2026

    72.6 °F

  • Average September

    86 °F

  • Highest 4 September, 2026

    102.7 °F

Climate (2021–2026)

Birmingham, Birmingham International Airport (6.2 miles)

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  • Average Low 2021–2026

    55.7 °F

  • Average 2021–2026

    65.8 °F

  • Average High 2021–2026

    76.3 °F
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