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

52°F

11°C

Humidity 61%
Wind Speed NW 16 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 18 Apr 10:53 am CDT
Extended Forecast for

5 Miles SW Smithton IL

  • Today

    Today: Mostly sunny, with a high near 56. Northwest wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Light west wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 56. Northwest wind 14 to 16 mph, with gusts as high as 25 mph.
Tonight
Clear, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 67. Light west wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 40. Northwest wind 5 to 7 mph becoming calm after midnight.
Monday
Sunny, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 83.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 78. Chance of precipitation is 70%.
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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:
9:01 am CDT Apr 18, 2026
Forecast Valid:
11am CDT Apr 18, 2026-6pm CDT Apr 24, 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