Alton Weather Forecast

    • 65
    • 81

    Chance Rain Showers

    • 66
    • 78

    Rain Showers Likely

    • 72
    • 84

    Thunderstorms Likely

    • 70
    • 85

    Rain Showers

    • 65
    • 80

    Thunderstorms

    • 65
    • 83

    Slight Chance Thunderstorms

Today 15 Jun Jefferson

Partly sunny this Morning, then becoming mostly cloudy. A slight chance of Showers. A slight chance of Thunderstorms this afternoon. Highs in the lower 80s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 15 Jun Jefferson

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Patchy fog after midnight. Lows in the mid 60s. Northwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 50 percent.

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Alton Temperature Statistics

June Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 4 June, 2026

    59.6 °F

  • Average June

    78.3 °F

  • Highest 11 June, 2026

    93.7 °F

Climate (2021–Present)

Birmingham, Birmingham International Airport (6.2 miles)

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  • Average Low 2021–2026

    55.5 °F

  • Average 2021–2026

    65.5 °F

  • Average High 2021–2026

    76.1 °F
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