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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

5 Miles SW Smithton IL

  • Today

    Today: Sunny, with a high near 65. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 43. South wind around 7 mph.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75. South wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 79. South wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 79 °F

    Slight Chance
    Rain then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 1pm, then rain likely. High near 67. Breezy. Chance of precipitation is 100%.

    High: 67 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 1am. Partly cloudy, with a low around 32.

    Low: 32 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 65. Calm wind becoming southwest 5 to 8 mph in the morning.
Tonight
Clear, with a low around 43. South wind around 7 mph.
Monday
Sunny, with a high near 75. South wind 6 to 14 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 60. South wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday
Rain likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 79. South wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 56. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before 1pm, then rain likely. High near 67. Breezy. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of rain before 1am. Partly cloudy, with a low around 32.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Partly sunny, with a high near 67.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
3:21 am CDT Mar 8, 2026
Forecast Valid:
5am CDT Mar 8, 2026-6pm CDT Mar 14, 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