Alton Weather Forecast

    • 27
    • 46

    Mostly Sunny

    • 39
    • 54

    Rain Likely

    • 40
    • 50

    Rain Likely

    • 32
    • 48

    Rain/Freezing Rain Likely

    • 23
    • 36

    Rain/Freezing Rain

    • 19
    • 32

    Slight Chance Rain/Freezing Rain

Today 20 Jan Jefferson

Sunny. Highs in the mid 40s. North Winds around 5 Mph.

Tonight 20 Jan Jefferson

Mostly clear. Lows in the upper 20s. Southeast Winds around 5 Mph.

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Alton Temperature Statistics

January Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 16 January, 2026

    23 °F

  • Average January

    48.6 °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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