Hazardous Weather Conditions
Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Overcast
73°F
23°C
| Humidity | 74% |
| Wind Speed | SW 13 G 21 mph |
| Barometer | 29.70 in (1005.4 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 11 Mar 1:53 am CDT |
Extended Forecast for
Cahokia IL
Overnight

Low: 68 °F
T-storms
Wednesday
High: 65 °F⇓
T-storms then
Rain LikelyWednesday Night

Low: 32 °F
Gradual
ClearingThursday

High: 56 °F
Sunny
Thursday Night

Low: 45 °F
Partly Cloudy
Friday

High: 63 °F
Partly Sunny
Friday Night

Low: 38 °F
Partly Cloudy
Saturday

High: 66 °F
Mostly Sunny
Saturday Night
Low: 54 °F
Partly Cloudy
then Slight
Chance
T-storms
Detailed Forecast
Overnight
Rain and thunderstorms likely, then rain and possibly a thunderstorm after 5am. Steady temperature around 68. Southwest wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Wednesday
Rain and thunderstorms before 3pm, then a slight chance of rain between 3pm and 4pm. Temperature falling to around 48 by 4pm. Southwest wind 11 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%.
Wednesday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 32. Northwest wind 5 to 15 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 56. Calm wind becoming southwest 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 45. South wind 9 to 16 mph, with gusts as high as 30 mph.
Friday
Partly sunny, with a high near 63.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 66.
Saturday Night
A 20 percent chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 54.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 67. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 26. Blustery. Chance of precipitation is 30%.
Monday
Sunny, with a high near 40.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Partly sunny, with a high near 45.
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)
1:26 am CDT Mar 11, 2026
2am CDT Mar 11, 2026-6pm CDT Mar 17, 2026



