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 and Breezy

90°F

32°C

Humidity 33%
Wind Speed N 25 G 31 mph
Barometer 29.60 in (1001.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 22 Mar 3:53 pm CDT
Extended Forecast for

5 Miles SW Smithton IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 92. West wind around 10 mph.

    High: 92 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 8pm and 9pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 35. Breezy, with a north wind 11 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    T-storms and
    Breezy then
    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 54. Northeast wind 8 to 10 mph.

    High: 54 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37. East wind around 6 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62. Southeast wind around 7 mph.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 92. West wind around 10 mph.
Tonight
A slight chance of showers and thunderstorms between 8pm and 9pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 35. Breezy, with a north wind 11 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Monday
Increasing clouds, with a high near 54. Northeast wind 8 to 10 mph.
Monday Night
Mostly cloudy, with a low around 37. East wind around 6 mph.
Tuesday
Mostly sunny, with a high near 62. Southeast wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Sunny, with a high near 87.
Thursday Night
A chance of rain and thunderstorms. Partly cloudy, with a low around 42. Chance of precipitation is 50%.
Friday
A 50 percent chance of rain. Partly sunny, with a high near 51.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 64.
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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:
1:25 pm CDT Mar 22, 2026
Forecast Valid:
4pm CDT Mar 22, 2026-6pm CDT Mar 29, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation