Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

46°F

8°C

Humidity 50%
Wind Speed N 7 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 28 Feb 2:53 am CST
Extended Forecast for

2 Miles SE Cahokia IL

  • Overnight

    Overnight: Mostly clear, with a low around 38. North wind around 6 mph.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain, mainly after 4pm.  Mostly sunny, with a high near 64. Light and variable wind becoming east 5 to 8 mph in the morning.

    High: 64 °F

    Mostly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before 7pm.  Partly cloudy, with a low around 31. South wind 5 to 10 mph becoming north after midnight.

    Low: 31 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 46. Northeast wind around 10 mph.

    High: 46 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Snow likely before 3am, then rain and snow likely.  Cloudy, with a low around 32. East wind around 10 mph.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow before 9am, then a chance of rain between 9am and noon.  Cloudy, with a high near 44. Chance of precipitation is 40%.

    High: 44 °F

    Chance
    Rain/Snow
    then Cloudy

  • Monday Night

    Monday Night: Rain.  Low around 38. Chance of precipitation is 80%.

    Low: 38 °F

    Rain

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm.  High near 60. Chance of precipitation is 90%.

    High: 60 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, with thunderstorms also possible after midnight.  Low around 50. Chance of precipitation is 80%.

    Low: 50 °F

    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 38. North wind around 6 mph.
Saturday
A 30 percent chance of rain, mainly after 4pm. Mostly sunny, with a high near 64. Light and variable wind becoming east 5 to 8 mph in the morning.
Saturday Night
A 20 percent chance of rain before 7pm. Partly cloudy, with a low around 31. South wind 5 to 10 mph becoming north after midnight.
Sunday
Increasing clouds, with a high near 46. Northeast wind around 10 mph.
Sunday Night
Snow likely before 3am, then rain and snow likely. Cloudy, with a low around 32. East wind around 10 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday
A chance of rain and snow before 9am, then a chance of rain between 9am and noon. Cloudy, with a high near 44. Chance of precipitation is 40%.
Monday Night
Rain. Low around 38. Chance of precipitation is 80%.
Tuesday
Rain and possibly a thunderstorm. High near 60. Chance of precipitation is 90%.
Tuesday Night
Rain, with thunderstorms also possible after midnight. Low around 50. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 66. Chance of precipitation is 70%.
Wednesday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Partly sunny, with a high near 70.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 56.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
1:36 am CST Feb 28, 2026
3am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
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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