Alton Weather Forecast

    • 74
    • 90

    Slight Chance Thunderstorms

    • 74
    • 92

    Partly Sunny

    • 75
    • 94

    Sunny

    • 75
    • 93

    Chance Thunderstorms

    • 74
    • 91

    Slight Chance Thunderstorms

    • 75
    • 92

    Slight Chance Thunderstorms

Today 27 Jun Jefferson

Partly sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph.

Tonight 27 Jun Jefferson

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the mid 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Real-Time

Alton Temperature Statistics

June Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest 4 June, 2026

    59.6 °F

  • Average June

    78.7 °F

  • Highest 11 June, 2026

    93.7 °F

Climate (2021–2026)

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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