Alton Weather Forecast

    • 51
    • 59

    Cloudy

    • 51
    • 70

    Decreasing Clouds

    • 53
    • 71

    Partly Sunny

    • 54
    • 73

    Partly Sunny

    • 57
    • 70

    Mostly Cloudy

    • 56
    • 73

    Mostly Cloudy

    • 34
    • 68

    Chance Rain Showers

Today 22 Dec Jefferson

Mostly cloudy with a slight chance of very light drizzle. Near steady temperature around 60. Southeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 22 Dec Jefferson

Cloudy. A slight chance of very light drizzle this evening. Lows in the lower 50s. Southeast Winds 5 to 10 Mph.

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Alton Temperature Statistics

December Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 15 December, 2025

    15.1 °F

  • Average December

    43.7 °F

  • Highest 13 December, 2025

    68 °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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