Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

74°F

23°C

Humidity 71%
Wind Speed S 9 G 23 mph
Barometer 29.87 in (1011.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 14 Apr 10:53 pm CDT
Extended Forecast for

Granite City IL

  • Tonight

    Tonight: Isolated showers and thunderstorms after 4am.  Increasing clouds, with a low around 70. Southwest wind around 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    Low: 70 °F

    Isolated
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm.  Mostly cloudy, with a high near 83. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 60%.

    High: 83 °F

    Isolated
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then scattered showers and thunderstorms after 4am.  Low around 64. Southwest wind 8 to 10 mph.  Chance of precipitation is 90%.

    Low: 64 °F

    Showers

  • Thursday

    Thursday: Scattered showers between 7am and 1pm, then scattered showers and thunderstorms after 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 8 to 11 mph.  Chance of precipitation is 40%.

    High: 84 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. West wind around 6 mph becoming light and variable  in the evening.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers.  Partly sunny, with a high near 72. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am.  Partly cloudy, with a low around 42.

    Low: 42 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms after 4am. Increasing clouds, with a low around 70. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Mostly cloudy, with a high near 83. Southwest wind 8 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms before 3am, then showers likely and possibly a thunderstorm between 3am and 4am, then scattered showers and thunderstorms after 4am. Low around 64. Southwest wind 8 to 10 mph. Chance of precipitation is 90%.
Thursday
Scattered showers between 7am and 1pm, then scattered showers and thunderstorms after 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 84. Southwest wind 8 to 11 mph. Chance of precipitation is 40%.
Thursday Night
Mostly clear, with a low around 60. West wind around 6 mph becoming light and variable in the evening.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 42.
Sunday
Sunny, with a high near 63.
Sunday Night
Clear, with a low around 41.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Granite City IL
 38.73°N 90.11°W (Elev. 417 ft)
10:31 pm CDT Apr 14, 2026
11pm CDT Apr 14, 2026-6pm CDT Apr 21, 2026
 
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Additional Resources

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