Alton Weather Forecast

    • 24
    • 50

    Increasing Clouds

    • 25
    • 39

    Mostly Sunny

    • 18
    • 45

    Mostly Sunny

    • 23
    • 40

    Mostly Sunny

    • 36
    • 52

    Mostly Cloudy

    • 34
    • 53

    Chance Rain

Today 17 Jan Jefferson

Mostly sunny. Highs around 50. West Winds 5 to 10 Mph.

Tonight 17 Jan Jefferson

Partly cloudy. Cooler with Lows in the mid 20s. Northwest Winds 5 to 10 Mph.

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Alton Temperature Statistics

January Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 12 January, 2026

    25 °F

  • Average January

    51.4 °F

  • Highest 7 January, 2026

    69.1 °F

Climate (2021–Present)

Birmingham, Birmingham International Airport (6.2 miles)

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  • Average Low 2021–2026

    55.4 °F

  • Average 2021–2026

    65.3 °F

  • Average High 2021–2026

    75.7 °F
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