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.

Fair

72°F

22°C

Humidity 55%
Wind Speed SW 12 G 25 mph
Barometer 29.91 in (1012.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 31 Mar 1:53 am CDT
Extended Forecast for

5 Miles SW Smithton IL

  • Overnight

    Overnight: Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 21 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 83. Breezy, with a southwest wind 10 to 15 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 31 mph.

    High: 83 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain likely after 3am. Mostly cloudy, with a low around 61. South wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 61 °F

    Chance
    T-storms then
    Rain Likely

  • Wednesday

    Wednesday: Rain and thunderstorms before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. High near 78. Light south wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 80%.

    High: 78 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 64. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 77. Breezy. Chance of precipitation is 80%.

    High: 77 °F

    Breezy.
    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Rain Likely

  • Friday

    Friday: A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.

    High: 81 °F

    Chance Rain
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Chance
    T-storms then
    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 83. Breezy, with a southwest wind 10 to 15 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 31 mph.
Tuesday Night
A chance of rain and thunderstorms, then rain likely after 3am. Mostly cloudy, with a low around 61. South wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Wednesday
Rain and thunderstorms before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. High near 78. Light south wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 80%.
Wednesday Night
A chance of rain, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 64. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Thursday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1pm. High near 77. Breezy. Chance of precipitation is 80%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Friday
A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 35.
Monday
Sunny, with a high near 61.
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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:
1:26 am CDT Mar 31, 2026
Forecast Valid:
2am CDT Mar 31, 2026-6pm CDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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