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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fog/Mist

54°F

12°C

Humidity 90%
Wind Speed SE 6 mph
Barometer 30.18 in (1022.2 mb)
Dewpoint 51°F (11°C)
Visibility 5.00 mi
Wind Chill52°F (11°C)
Last update 24 Dec 10:53 am CST
Extended Forecast for

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

  • Today

    Today: Mostly cloudy, with a high near 68. Southeast wind around 9 mph.

    High: 68 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming light and variable after midnight.

    Low: 55 °F

    Partly Cloudy
    then Patchy
    Fog

  • Christmas Day

    Christmas Day: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming east around 6 mph in the afternoon.

    High: 66 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54. East wind 6 to 8 mph becoming southwest after midnight.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.

    High: 53 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 68. Southeast wind around 9 mph.
Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming light and variable after midnight.
Christmas Day
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 66. Calm wind becoming east around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 54. East wind 6 to 8 mph becoming southwest after midnight.
Friday
Mostly sunny, with a high near 72. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Partly sunny, with a high near 70.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 53. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Sunny, with a high near 30.
Monday Night
Mostly clear, with a low around 16.
Tuesday
Partly sunny, with a high near 37.
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Forecast Area
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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)
Last Update:
11:01 am CST Dec 24, 2025
Forecast Valid:
11am CST Dec 24, 2025-6pm CST Dec 30, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation