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Severe Thunderstorms in the Southeast U.S; Flash Flooding Threat for the Northern Gulf Coast

Severe thunderstorms are expected across portions of the Southeast and Carolinas today where a Slight Risk (Level 2 of 5) has been issued. A Slight Risk Excessive Rainfall Outlook (Level 2 of 4) has been issued for part of the northern Gulf Coast today due to the threat of flash, urban, and riverine flooding. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

88°F

31°C

Humidity 45%
Wind Speed Vrbl 3 mph
Barometer 29.98 in (1014.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 19 May 11:53 am CDT
Extended Forecast for

Cahokia IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. South wind around 7 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 67. Southeast wind 5 to 7 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. South wind 6 to 13 mph.

    High: 87 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67. South wind 5 to 9 mph.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 92. South wind 7 to 17 mph, with gusts as high as 30 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 60%.

    High: 83 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Sunny, with a high near 82.

    High: 82 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 90. South wind around 7 mph.
Tonight
Increasing clouds, with a low around 67. Southeast wind 5 to 7 mph.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. South wind 6 to 13 mph.
Monday Night
Partly cloudy, with a low around 67. South wind 5 to 9 mph.
Tuesday
Sunny, with a high near 92. South wind 7 to 17 mph, with gusts as high as 30 mph.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 60.
Thursday
A 20 percent chance of showers after 1pm. Sunny, with a high near 82.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 62.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Cahokia IL
 38.57°N 90.18°W (Elev. 407 ft)
Last Update:
11:52 am CDT May 19, 2024
Forecast Valid:
1pm CDT May 19, 2024-6pm CDT May 25, 2024
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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