Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fog

52°F

11°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.56 in (1000.9 mb)
Dewpoint 52°F (11°C)
Visibility 0.50 mi
Wind Chill50°F (10°C)
Last update 19 Feb 6:53 am CST
Extended Forecast for

Granite City IL

Dense Fog Advisory until February 19, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory until February 19, 09:00am

    NOW until 9:00am Thu

    Dense Fog Advisory

  • Today

    High: 67 °F

    T-storms
    Likely and
    Areas Dense
    Fog

  • Tonight

    Tonight: Partly cloudy, with a low around 37. West wind 10 to 18 mph, with gusts as high as 32 mph.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 49. West wind 7 to 17 mph, with gusts as high as 29 mph.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. North wind 3 to 5 mph.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain and snow after noon.  Mostly sunny, with a high near 47. Northwest wind 5 to 11 mph.  Chance of precipitation is 20%.

    High: 47 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 39. Breezy.

    High: 39 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 2pm. Areas of dense fog before 9am. Otherwise, mostly cloudy, with a high near 67. Southeast wind 5 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 60%.
Tonight
Partly cloudy, with a low around 37. West wind 10 to 18 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 49. West wind 7 to 17 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around 30. North wind 3 to 5 mph.
Saturday
A slight chance of rain and snow after noon. Mostly sunny, with a high near 47. Northwest wind 5 to 11 mph. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Sunny, with a high near 39. Breezy.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 37.
Monday Night
Mostly clear, with a low around 21.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Granite City IL
 38.73°N 90.11°W (Elev. 417 ft)
6:26 am CST Feb 19, 2026
7am CST Feb 19, 2026-6pm CST Feb 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database