Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Light Snow

22°F

-6°C

Humidity 66%
Wind Speed W 20 G 32 mph
Barometer 29.97 in (1015.2 mb)
Dewpoint 12°F (-11°C)
Visibility 6.00 mi
Wind Chill7°F (-14°C)
Last update 16 Mar 9:53 am CDT
Extended Forecast for

4 Miles SSE Mascoutah IL

Wind Advisory March 16, 10:18am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 10:18am until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Today

    High: 30 °F

    Slight Chance
    Snow and
    Blustery

  • Tonight

    Tonight: Mostly cloudy, with a low around 15. Northwest wind 11 to 17 mph, with gusts as high as 26 mph.

    Low: 15 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Northwest wind 6 to 8 mph becoming southwest in the afternoon.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow.  Mostly cloudy, with a low around 31. Southeast wind 5 to 14 mph, with gusts as high as 23 mph.

    Low: 31 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Thursday Night

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

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Today
A slight chance of snow before 3pm, then a chance of flurries between 3pm and 4pm. Cloudy, with a high near 30. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 15. Northwest wind 11 to 17 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 36. Northwest wind 6 to 8 mph becoming southwest in the afternoon.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 31. Southeast wind 5 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 63. South wind 9 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 70.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Mascoutah IL
 38.47°N 89.78°W (Elev. 420 ft)
8:41 am CDT Mar 16, 2026
10am CDT Mar 16, 2026-6pm CDT Mar 22, 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