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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast and Breezy

36°F

2°C

Humidity 76%
Wind Speed W 22 G 36 mph
Barometer 29.62 in (1003.1 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 15 Mar 10:53 pm CDT
Extended Forecast for

2 Miles SE Cahokia IL

Wind Advisory March 15, 11:54pm until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 15, 11:54pm until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Tonight

    Low: 23 °F

    Chance
    Rain/Snow and
    Blustery

  • Monday

    Monday: A slight chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.

    High: 29 °F

    Blustery.
    Slight Chance
    Snow then
    Scattered
    Flurries

  • Monday Night

    Monday Night: Partly cloudy, with a low around 16. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Northwest wind 5 to 8 mph becoming southwest in the afternoon.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow before 1am, then a chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 31. South wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Tonight
A slight chance of rain and snow before midnight, then a chance of snow between midnight and 3am. Mostly cloudy, with a low around 23. Blustery, with a northwest wind 21 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.
Monday
A slight chance of snow before noon, then scattered flurries between noon and 1pm. Cloudy, with a high near 29. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 16. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 36. Northwest wind 5 to 8 mph becoming southwest in the afternoon.
Tuesday Night
A slight chance of snow before 1am, then a chance of rain and snow between 1am and 4am, then a chance of rain after 4am. Mostly cloudy, with a low around 31. South wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 45.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Cahokia IL
 38.53°N 90.15°W (Elev. 499 ft)
Last Update:
10:56 pm CDT Mar 15, 2026
Forecast Valid:
11pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation