Alton Weather Forecast

    • 75
    • 94

    Slight Chance Thunderstorms

    • 74
    • 94

    Mostly Sunny

    • 73
    • 92

    Slight Chance Thunderstorms

    • 71
    • 93

    Chance Thunderstorms

    • 70
    • 93

    Slight Chance Thunderstorms

    • 69
    • 91

    Slight Chance Thunderstorms

Today 2 Sep Jefferson

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the upper 90s. Northeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 2 Sep Jefferson

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 70s. East Winds around 5 Mph in the Evening, becoming light and variable.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Alton Temperature Statistics

September Temperature

Birmingham, Birmingham International Airport (6.2 miles)

  • Lowest

    –

  • Average September

    –

  • Highest

    –

Climate (2021–2026)

Birmingham, Birmingham International Airport (6.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    65.7 °F

  • Average High 2021–2026

    76.3 °F
Get WillyWeather+ to remove ads