Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
Cahokia IL
Overnight

Low: 49 °F
Showers
LikelyWednesday
High: 62 °F
Chance
T-storms and
Patchy Fog
then ShowersWednesday Night
Low: 55 °F
T-storms then
Showers and
Patchy FogThursday
High: 69 °F
Showers
Likely then
Chance
ShowersThursday Night

Low: 59 °F
Chance
ShowersFriday

High: 79 °F
Chance
ShowersFriday Night
Low: 56 °F
Chance
T-storms then
ShowersSaturday
High: 67 °F
Chance
Showers then
Mostly SunnySaturday Night

Low: 41 °F
Partly Cloudy
Detailed Forecast
Overnight
Showers likely and possibly a thunderstorm before 5am, then a chance of showers and thunderstorms after 5am. Cloudy, with a low around 49. Light northeast wind. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms. Patchy fog before 11am. High near 62. Calm wind becoming east around 6 mph in the morning. Chance of precipitation is 90%.
Wednesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Patchy fog between 3am and 4am. Low around 55. Light and variable wind becoming south around 6 mph in the evening. Chance of precipitation is 90%.
Thursday
Showers likely, mainly before 9am. Mostly cloudy, with a high near 69. West wind 3 to 8 mph. Chance of precipitation is 60%.
Thursday Night
A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 59. South wind 3 to 7 mph. Chance of precipitation is 50%.
Friday
A 40 percent chance of showers, mainly before noon. Partly sunny, with a high near 79.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 56. Chance of precipitation is 90%.
Saturday
A 40 percent chance of showers before noon. Partly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 79.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 61.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Cahokia IL
38.57°N 90.18°W (Elev. 407 ft)
38.57°N 90.18°W (Elev. 407 ft)
12:51 am CST Mar 4, 2026
4am CST Mar 4, 2026-6pm CDT Mar 10, 2026



