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.

Fair

35°F

2°C

Humidity 48%
Wind Speed Calm
Barometer 30.01 in (1016.7 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 5 Dec 11:53 am CST
Extended Forecast for

2 Miles NW Cahokia IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 40. South wind around 6 mph.

    High: 40 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 28. South wind around 6 mph becoming light and variable after midnight.

    Low: 28 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 40. Light and variable wind.

    High: 40 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 32. South wind 3 to 5 mph.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: A slight chance of rain, mixing with snow after 9am, then gradually ending. Mostly cloudy, with a high near 40. Southeast wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 40 °F

    Slight Chance
    Rain/Snow
    then Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 40. South wind around 6 mph.
Tonight
Increasing clouds, with a low around 28. South wind around 6 mph becoming light and variable after midnight.
Saturday
Partly sunny, with a high near 40. Light and variable wind.
Saturday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 32. South wind 3 to 5 mph.
Sunday
A slight chance of rain, mixing with snow after 9am, then gradually ending. Mostly cloudy, with a high near 40. Southeast wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 15.
Monday
Mostly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A 20 percent chance of rain. Mostly cloudy, with a high near 48.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly cloudy, with a high near 34.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Cahokia IL
 38.57°N 90.21°W (Elev. 397 ft)
Last Update:
10:26 am CST Dec 5, 2025
Forecast Valid:
12pm CST Dec 5, 2025-6pm CST Dec 11, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation