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: 52 °F
Showers and
Patchy FogThursday
High: 67 °F
Showers
Likely and
Patchy Fog
then Mostly
CloudyThursday Night

Low: 57 °F
Chance
T-stormsFriday
High: 79 °F
Slight Chance
T-storms then
Slight Chance
ShowersFriday Night
Low: 59 °F
Chance
T-storms then
ShowersSaturday
High: 70 °F
Chance
Showers then
Partly SunnySaturday Night

Low: 41 °F
Partly Cloudy
Sunday

High: 66 °F
Sunny
Sunday Night

Low: 47 °F
Mostly Clear
Detailed Forecast
Overnight
Showers and possibly a thunderstorm. Patchy fog. Low around 52. Southeast wind around 5 mph. Chance of precipitation is 90%.
Thursday
Showers and thunderstorms likely before 9am, then a slight chance of showers between 9am and 10am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 67. West wind 3 to 8 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, with a low around 57. Light and variable wind becoming southeast 5 to 7 mph after midnight.
Friday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers after noon. Partly sunny, with a high near 79. South wind 9 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 59. South wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.
Saturday
A 50 percent chance of showers before noon. Mostly cloudy, with a high near 70.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 78.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 60.
Tuesday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.
Wednesday
Showers likely. Mostly cloudy, with a high near 63. 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)
4:06 am CST Mar 5, 2026
4am CST Mar 5, 2026-6pm CDT Mar 11, 2026



