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.

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: A 20 percent chance of rain before 5pm. Cloudy, with a high near 42. East wind 6 to 8 mph.

    High: 42 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 4am. Low around 39. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 39 °F

    Cloudy then
    Rain

  • Tuesday

    Tuesday: Rain before noon, then a chance of rain and thunderstorms between noon and 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 62. Southeast wind 3 to 6 mph. Chance of precipitation is 90%.

    High: 62 °F

    Rain then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely before midnight, then showers likely and possibly a thunderstorm after midnight. Patchy fog between 9pm and 11pm. Otherwise, cloudy, with a low around 52. East wind around 6 mph becoming south after midnight. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 69. Southwest wind 6 to 10 mph. Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Thursday

    Thursday: Showers likely, mainly before noon. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.

    High: 71 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Today
A 20 percent chance of rain before 5pm. Cloudy, with a high near 42. East wind 6 to 8 mph.
Tonight
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 4am. Low around 39. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Tuesday
Rain before noon, then a chance of rain and thunderstorms between noon and 4pm, then rain likely and possibly a thunderstorm after 4pm. High near 62. Southeast wind 3 to 6 mph. Chance of precipitation is 90%.
Tuesday Night
Rain likely before midnight, then showers likely and possibly a thunderstorm after midnight. Patchy fog between 9pm and 11pm. Otherwise, cloudy, with a low around 52. East wind around 6 mph becoming south after midnight. Chance of precipitation is 60%.
Wednesday
Showers and possibly a thunderstorm. High near 69. Southwest wind 6 to 10 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 56. Chance of precipitation is 80%.
Thursday
Showers likely, mainly before noon. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
Thursday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Saturday
Showers likely. Cloudy, with a high near 68. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 47.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 65.
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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:
10:56 am CST Mar 2, 2026
Forecast Valid:
11am CST Mar 2, 2026-6pm CDT Mar 8, 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