Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

78°F

26°C

Humidity 64%
Wind Speed S 13 G 25 mph
Barometer 29.89 in (1011.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Apr 10:53 am CDT
Extended Forecast for

Cahokia IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm.  Mostly sunny, with a high near 87. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall.  Low around 50. South wind 9 to 13 mph becoming northwest after midnight. Winds could gust as high as 23 mph.  Chance of precipitation is 100%.

    Low: 50 °F

    Chance
    T-storms then
    Heavy Rain

  • Saturday

    Saturday: A chance of showers and thunderstorms.  Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 14 mph, with gusts as high as 25 mph.  Chance of precipitation is 50%.

    High: 60 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41. Northwest wind 6 to 11 mph becoming light west  after midnight. Winds could gust as high as 20 mph.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 87. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 50. South wind 9 to 13 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%.
Saturday
A chance of showers and thunderstorms. Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Saturday Night
Mostly clear, with a low around 41. Northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 68. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Cahokia IL
 38.57°N 90.18°W (Elev. 407 ft)
8:36 am CDT Apr 17, 2026
11am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
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Additional Resources

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