Alton Weather Forecast

    • 34
    • 51

    Mostly Sunny

    • 32
    • 56

    Mostly Sunny

    • 35
    • 50

    Mostly Sunny

    • 37
    • 60

    Partly Sunny

    • 38
    • 56

    Chance Rain

    • 33
    • 53

    Partly Sunny

Today 9 Dec Jefferson

Mostly sunny. Highs in the lower 50s. South Winds around 5 Mph.

Tonight 9 Dec Jefferson

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 30s. South Winds 5 to 10 Mph.

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Alton Temperature Statistics

December Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 3 December, 2025

    30.9 °F

  • Average December

    42 °F

  • Highest 2 December, 2025

    54 °F

Climate (2020–Present)

Birmingham, Birmingham International Airport (6.2 miles)

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  • Average Low 2020–2025

    55.3 °F

  • Average 2020–2025

    65.2 °F

  • Average High 2020–2025

    75.6 °F
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