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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

66°F

19°C

Humidity 70%
Wind Speed S 13 G 32 mph
Barometer 29.33 in (992.8 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 15 Mar 3:53 pm CDT
Extended Forecast for

4 Miles SE Cahokia IL

Tornado Watch March 15, 04:32pm until March 15, 08:00pm
Wind Advisory March 15, 04:32pm until March 16, 12:00pm
Click here for hazard details and duration
Tornado Watch
Wind Advisory
  •  
    Tornado Watch March 15, 04:32pm until March 15, 08:00pm
    Wind Advisory March 15, 04:32pm until March 16, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 63 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Rain before 10pm, then a chance of rain and snow between 10pm and midnight, then a slight chance of snow after midnight. Some thunder is also possible. Low around 23. Blustery, with a west wind around 25 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Rain/Snow and
    Breezy then
    Slight Chance
    Snow and
    Blustery

  • Monday

    Monday: A slight chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.

    High: 29 °F

    Blustery.
    Slight Chance
    Snow then
    Scattered
    Flurries

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Northwest wind 5 to 8 mph becoming southwest in the afternoon.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow before 1am, then a chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 5pm. Some of the storms could be severe. Steady temperature around 63. Breezy, with a southwest wind around 25 mph, with gusts as high as 38 mph. Chance of precipitation is 80%.
Tonight
Rain before 10pm, then a chance of rain and snow between 10pm and midnight, then a slight chance of snow after midnight. Some thunder is also possible. Low around 23. Blustery, with a west wind around 25 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
A slight chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 15. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 36. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Tuesday Night
A slight chance of snow before 1am, then a chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Cahokia IL
 38.53°N 90.12°W (Elev. 499 ft)
Last Update:
4:26 pm CDT Mar 15, 2026
Forecast Valid:
4pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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