Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

66°F

19°C

Humidity 81%
Wind Speed Calm
Barometer 29.98 in (1015.0 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 25 Dec 12:53 pm CST
Extended Forecast for

Cahokia / St. Louis, St. Louis Downtown Airport IL

  • Christmas Day

    Christmas Day: Partly sunny, with a high near 69. Calm wind becoming east around 6 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Southeast wind around 8 mph becoming southwest after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 69. Southwest wind 6 to 10 mph becoming northwest in the afternoon.

    High: 69 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of rain after midnight.  Cloudy, with a low around 58.

    Low: 58 °F

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Rain likely, then showers and possibly a thunderstorm after 9am.  High near 67. Chance of precipitation is 80%.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow before midnight.  Mostly cloudy, with a low around 21. Blustery.  Chance of precipitation is 60%.

    Low: 21 °F

    Rain/Snow
    Likely then
    Mostly Cloudy
    and Blustery

  • Monday

    Monday: Mostly sunny, with a high near 29. Blustery.

    High: 29 °F

    Mostly Sunny
    and Blustery
    then Sunny

Detailed Forecast

Christmas Day
Partly sunny, with a high near 69. Calm wind becoming east around 6 mph.
Tonight
Mostly cloudy, with a low around 57. Southeast wind around 8 mph becoming southwest after midnight.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 69. Southwest wind 6 to 10 mph becoming northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 43. Light and variable wind.
Saturday
Partly sunny, with a high near 67. Light east wind becoming southeast 5 to 10 mph in the morning.
Saturday Night
A 30 percent chance of rain after midnight. Cloudy, with a low around 58.
Sunday
Rain likely, then showers and possibly a thunderstorm after 9am. High near 67. Chance of precipitation is 80%.
Sunday Night
Rain likely, possibly mixed with snow before midnight. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 29. Blustery.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Cahokia / St. Louis, St. Louis Downtown Airport IL
 38.57°N 90.15°W (Elev. 407 ft)
12:26 pm CST Dec 25, 2025
12pm CST Dec 25, 2025-6pm CST Dec 31, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database