Granite City Weather Forecast

    • 24
    • 46

    Becoming Sunny

    • 9
    • 39

    Mostly Cloudy

    • 3
    • 16

    Mostly Cloudy

    • 9
    • 15

    Chance Snow

    • 7
    • 23

    Partly Sunny

    • 12
    • 26

    Partly Sunny

Today 21 Jan Madison

Sunny. Highs in the mid 40s. West Winds 10 to 15 Mph. Gusts up to 30 Mph this afternoon.

Tonight 21 Jan Madison

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 20s. West Winds 10 to 15 Mph, becoming northwest after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite City Temperature Statistics

January Temperature

St. Louis Downtown Airport (9.3 miles)

  • Lowest 18 January, 2026

    10.9 °F

  • Average January

    38.5 °F

  • Highest 6 January, 2026

    68 °F

Climate (2021–Present)

St. Louis Downtown Airport (9.3 miles)

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

  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    68.7 °F
Get WillyWeather+ to remove ads