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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

75°F

24°C

Humidity 76%
Wind Speed NE 6 mph
Barometer 30.00 in (1015.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 15 Jun 8:53 pm CDT
Extended Forecast for

East St. Louis IL

  • Tonight

    Tonight: A slight chance of showers between 10pm and 2am. Cloudy, with a low around 72. Light east wind. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly cloudy, with a high near 86. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind around 6 mph.

    Low: 74 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 91. Chance of precipitation is 60%.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 71.

    Low: 71 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers between 10pm and 2am. Cloudy, with a low around 72. Light east wind. Chance of precipitation is 20%.
Monday
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly cloudy, with a high near 86. Calm wind becoming southeast around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind around 6 mph.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 91. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 71.
Juneteenth
Mostly sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny and hot, with a high near 97.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny and hot, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East St. Louis IL
 38.62°N 90.12°W (Elev. 413 ft)
Last Update:
5:51 pm CDT Jun 15, 2025
Forecast Valid:
9pm CDT Jun 15, 2025-6pm CDT Jun 22, 2025
 
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