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

Excessive Rainfall and Severe Thunderstorms Threaten the Southern U.S. Again Thursday

A Moderate Risk (Level 3 of 4) Excessive Rainfall Outlook and Flood Watches have been issued for portions of east Texas into Louisiana Thursday where flash, urban, and riverine flooding is possible. A Slight Risk (Level 2 of 5) for scattered severe thunderstorms has been issued from west Texas to the lower Mississippi Valley Thursday afternoon into Thursday night. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

75°F

24°C

Humidity 71%
Wind Speed NA
Barometer 29.80 in (1008.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 16 May 4:53 pm CDT
Extended Forecast for

Cahokia / St. Louis, St. Louis Downtown Airport IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 73. Southwest wind around 7 mph.

    High: 73 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog before 3am, then patchy fog after 5am. Otherwise, cloudy, with a low around 62. Southwest wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Chance
    T-storms and
    Patchy Fog

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 9am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 76. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 76 °F

    Chance
    T-storms and
    Patchy Fog

  • Friday Night

    Friday Night: A 20 percent chance of showers before 9pm. Mostly cloudy, with a low around 61. South wind 3 to 5 mph.

    Low: 61 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 84. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 73. Southwest wind around 7 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog before 3am, then patchy fog after 5am. Otherwise, cloudy, with a low around 62. Southwest wind around 5 mph becoming calm in the evening.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 9am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 76. Calm wind becoming southeast around 6 mph in the afternoon.
Friday Night
A 20 percent chance of showers before 9pm. Mostly cloudy, with a low around 61. South wind 3 to 5 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 84. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 83.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Cahokia / St. Louis, St. Louis Downtown Airport IL
 38.57°N 90.15°W (Elev. 407 ft)
Last Update:
3:23 pm CDT May 16, 2024
Forecast Valid:
5pm CDT May 16, 2024-6pm CDT May 23, 2024
 
Forecast Discussion
 
Get as KML Get as XML

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