Granite City Weather Forecast

    • 78
    • 98

    Hot

    • 77
    • 98

    Hot

    • 77
    • 98

    Hot

    • 76
    • 98

    Slight Chance Thunderstorms

    • 77
    • 96

    Partly Sunny

    • 76
    • 96

    Slight Chance Thunderstorms

    • 75
    • 95

    Chance Thunderstorms

Today 21 Jun Madison

Sunny, hot. Near steady temperature in the mid 90s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 108.

Tonight 21 Jun Madison

Clear. Lows in the mid 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 102 early this evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite City Temperature Statistics

June Temperature

St. Louis Downtown Airport (9.3 miles)

  • Lowest 10 June, 2025

    55.7 °F

  • Average June

    73.5 °F

  • Highest 11 June, 2025

    88.6 °F

Climate (2020–Present)

St. Louis Downtown Airport (9.3 miles)

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

  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    68.3 °F
Get WillyWeather+ to remove ads