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

41°F

5°C

Humidity 57%
Wind Speed Calm
Barometer 30.28 in (1025.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 29 Mar 6:53 am CDT
Extended Forecast for

2 Miles SE Cahokia IL

  • Today

    Today: Partly sunny, with a high near 71. South wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 71 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 56. South wind around 10 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. South wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 24 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 86. South wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 86 °F

    Slight Chance
    Rain then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Chance
    T-storms then
    Rain

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm before 1pm, then a chance of rain and thunderstorms after 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely and possibly a thunderstorm. Cloudy, with a low around 48. Chance of precipitation is 70%.

    Low: 48 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely and possibly a thunderstorm. Cloudy, with a high near 65. Chance of precipitation is 70%.

    High: 65 °F

    Rain Likely

Detailed Forecast

Today
Partly sunny, with a high near 71. South wind 6 to 14 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 56. South wind around 10 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 84. South wind 11 to 16 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 24 mph.
Tuesday
A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 86. South wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 53. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm before 1pm, then a chance of rain and thunderstorms after 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Wednesday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 48. Chance of precipitation is 70%.
Thursday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 65. Chance of precipitation is 70%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 76.
Friday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 57.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
Last Update:
1:26 am CDT Mar 29, 2026
Forecast Valid:
7am CDT Mar 29, 2026-6pm CDT Apr 4, 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