National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fog/Mist

33°F

1°C

Humidity 89%
Wind Speed N 16 mph
Barometer 30.26 in (1025.2 mb)
Dewpoint 30°F (-1°C)
Visibility 5.00 mi
Wind Chill23°F (-5°C)
Last update 3 Dec 11:53 pm CST
Extended Forecast for

Granite City IL

  • Overnight

    Overnight: A slight chance of snow before 3am, then a chance of flurries between 3am and 4am. Cloudy, with a low around 14. North wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 14 °F

    Slight Chance
    Snow

  • Thursday

    Thursday: Cloudy through mid morning, then gradual clearing, with a high near 23. North wind 5 to 8 mph.

    High: 23 °F

    Gradual
    Clearing

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 13. Light and variable wind.

    Low: 13 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 38. Calm wind becoming south around 6 mph in the morning.

    High: 38 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 25. South wind around 5 mph becoming calm in the evening.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.

    Low: 26 °F

    Cloudy then
    Slight Chance
    Freezing Rain

  • Sunday

    Sunday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 34.

    High: 34 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of snow before 3am, then a chance of flurries between 3am and 4am. Cloudy, with a low around 14. North wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Thursday
Cloudy through mid morning, then gradual clearing, with a high near 23. North wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 13. Light and variable wind.
Friday
Mostly sunny, with a high near 38. Calm wind becoming south around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 25. South wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 38.
Saturday Night
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.
Sunday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Granite City IL
 38.73°N 90.11°W (Elev. 417 ft)
Last Update:
10:11 pm CST Dec 3, 2025
Forecast Valid:
1am CST Dec 4, 2025-6pm CST Dec 10, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation