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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

69°F

21°C

Humidity 70%
Wind Speed Calm
Barometer 29.96 in (1014.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 11 Oct 9:53 pm CDT
Extended Forecast for

East St. Louis IL

  • Tonight

    Tonight: Mostly clear, with a low around 64. Southwest wind around 6 mph.

    Low: 64 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 95. Southwest wind 6 to 11 mph.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. Southwest wind 6 to 9 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Southwest wind 6 to 9 mph.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 84. Chance of precipitation is 90%.

    High: 84 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 79. Chance of precipitation is 80%.

    High: 79 °F

    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 64. Southwest wind around 6 mph.
Columbus Day
Sunny, with a high near 95. Southwest wind 6 to 11 mph.
Monday Night
Mostly clear, with a low around 71. Southwest wind 6 to 9 mph.
Tuesday
Sunny and hot, with a high near 97. Southwest wind 6 to 9 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind 5 to 7 mph.
Wednesday
Showers and possibly a thunderstorm before 10am, then showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 84. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 79. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Friday
Partly sunny, with a high near 67. Breezy.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East St. Louis IL
 38.62°N 90.12°W (Elev. 413 ft)
Last Update:
10:16 pm CDT Oct 11, 2026
Forecast Valid:
10pm CDT Oct 11, 2026-6pm CDT Oct 18, 2026
 
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