National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Light Snow and Breezy

38°F

3°C

Humidity 48%
Wind Speed NW 24 G 38 mph
Barometer 30.25 in (1024.6 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 9 Nov 11:53 am CST
Extended Forecast for

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

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 39. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 33 mph.

    High: 39 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Scattered flurries between midnight and 3am. Partly cloudy, with a low around 24. Northwest wind 13 to 16 mph, with gusts as high as 25 mph.

    Low: 24 °F

    Scattered
    Flurries

  • Monday

    Monday: Sunny, with a high near 41. Northwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 41 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 23. Northwest wind 5 to 8 mph becoming light and variable.

    Low: 23 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 55. South wind 8 to 15 mph, with gusts as high as 26 mph.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 39. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 33 mph.
Tonight
Scattered flurries between midnight and 3am. Partly cloudy, with a low around 24. Northwest wind 13 to 16 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 41. Northwest wind 10 to 16 mph, with gusts as high as 26 mph.
Monday Night
Increasing clouds, with a low around 23. Northwest wind 5 to 8 mph becoming light and variable.
Veterans Day
Partly sunny, with a high near 55. South wind 8 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 39.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 75.
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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:
11:21 am CST Nov 9, 2025
Forecast Valid:
12pm CST Nov 9, 2025-6pm CST Nov 15, 2025
 
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