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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

66°F

19°C

Humidity 68%
Wind Speed S 20 G 36 mph
Barometer 29.37 in (994.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 15 Mar 2:53 pm CDT
Extended Forecast for

Mascoutah IL

Tornado Watch March 15, 03:25pm until March 15, 08:00pm
Wind Advisory March 15, 03:25pm until March 16, 12:00pm
Click here for hazard details and duration
Tornado Watch
Wind Advisory
  •  
    Tornado Watch March 15, 03:25pm until March 15, 08:00pm
    Wind Advisory March 15, 03:25pm until March 16, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 69 °F

    Severe
    Thunderstorms
    and Breezy

  • Tonight

    Tonight: Rain before 11pm, then a slight chance of snow after midnight. Some thunder is also possible. Low around 24. Breezy, with a west wind 23 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Breezy.
    Severe
    Thunderstorms
    then Slight
    Chance Snow

  • Monday

    Monday: A slight chance of snow before 1pm, then scattered flurries between 1pm and 3pm. Cloudy, with a high near 29. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

    High: 29 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. Northwest wind 10 to 18 mph, with gusts as high as 25 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 35. Northwest wind around 7 mph becoming southwest in the afternoon.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A slight chance of rain, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. High near 69. Breezy, with a south wind around 26 mph, with gusts as high as 41 mph. Chance of precipitation is 80%.
Tonight
Rain before 11pm, then a slight chance of snow after midnight. Some thunder is also possible. Low around 24. Breezy, with a west wind 23 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
A slight chance of snow before 1pm, then scattered flurries between 1pm and 3pm. Cloudy, with a high near 29. Blustery, with a northwest wind 23 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 15. Northwest wind 10 to 18 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 35. Northwest wind around 7 mph becoming southwest in the afternoon.
Tuesday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 29.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 43.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mascoutah IL
 38.52°N 89.81°W (Elev. 423 ft)
Last Update:
3:01 pm CDT Mar 15, 2026
Forecast Valid:
3pm CDT Mar 15, 2026-6pm CDT Mar 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation