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

66°F

19°C

Humidity 90%
Wind Speed Calm
Barometer 29.92 in (1012.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 4 Apr 4:53 am CDT
Extended Forecast for

4 Miles WSW Smithton IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Steady temperature around 67. Southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.

    Low: 67 °F

    T-storms

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 2pm. Temperature falling to around 55 by 1pm. West wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    High: 63 °F⇓

    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming clear, with a low around 39. Northwest wind 7 to 14 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 58. Northwest wind 6 to 11 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Steady temperature around 67. Southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 2pm. Temperature falling to around 55 by 1pm. West wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 39. Northwest wind 7 to 14 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 58. Northwest wind 6 to 11 mph.
Sunday Night
Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
Partly sunny, with a high near 54.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 54.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
4:36 am CDT Apr 4, 2026
Forecast Valid:
5am CDT Apr 4, 2026-6pm CDT Apr 10, 2026
 
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