Alton Weather Forecast

    • 63
    • 89

    Increasing Clouds

    • 60
    • 77

    Rain Showers

    • 62
    • 82

    Chance Thunderstorms

    • 61
    • 81

    Rain Showers

    • 64
    • 79

    Rain Showers

    • 68
    • 85

    Thunderstorms

Today 2 May Crawford

Sunny. Highs in the upper 80s. South Winds up to 10 Mph.

Tonight 2 May Crawford

Partly cloudy in the Evening, then mostly cloudy with a 20 percent chance of Thunderstorms after midnight. Lows in the lower 60s. South Winds up to 10 Mph.

Graph Plots Open in Graphs
  • Temperature Forecast NOAA

  • Temperature Real-Time

Alton Temperature Statistics

May Temperature

Fort Knox (28.6 miles)

  • Lowest

  • Average May

  • Highest

Climate (2019–Present)

Fort Knox (28.6 miles)

Take a look at our website widgetsAvailable free! Find Out More
  • Average Low 2019–2024

    47.2 °F
  • Average 2019–2024

    57 °F
  • Average High 2019–2024

    66.8 °F
Get an account to remove ads