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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Partly Cloudy

47°F

8°C

Humidity 50%
Wind Speed Calm
Barometer 29.79 in (1008.9 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 25 Feb 9:53 am CST
Extended Forecast for

5 Miles SW Smithton IL

  • Today

    Today: Mostly cloudy, with a high near 52. Calm wind becoming northeast around 5 mph.

    High: 52 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 35. Northeast wind 3 to 5 mph.

    Low: 35 °F

    Slight Chance
    Rain then
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 56. East wind around 5 mph becoming calm in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. Light southwest wind.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after midnight. Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.

    High: 48 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 52. Calm wind becoming northeast around 5 mph.
Tonight
A 50 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 35. Northeast wind 3 to 5 mph.
Thursday
Mostly sunny, with a high near 56. East wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 34. Light southwest wind.
Friday
Sunny, with a high near 68. Light south wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 64.
Saturday Night
A 20 percent chance of rain after midnight. Partly cloudy, with a low around 33.
Sunday
A chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.
Sunday Night
Rain likely before midnight, then a chance of rain and snow. Some thunder is also possible. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 43.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 31.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
10:26 am CST Feb 25, 2026
Forecast Valid:
10am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation