Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

43°F

6°C

Humidity 60%
Wind Speed N 18 G 28 mph
Barometer 30.23 in (1023.4 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 23 Mar 2:53 am CDT
Extended Forecast for

Smithton IL

  • Overnight

    Overnight: Mostly clear, with a low around 35. North wind around 15 mph, with gusts as high as 25 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 54. North wind around 11 mph, with gusts as high as 21 mph.

    High: 54 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A chance of sprinkles after 2am.  Mostly cloudy, with a low around 36. East wind around 7 mph.

    Low: 36 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. Southeast wind 6 to 8 mph.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. Southeast wind around 6 mph becoming calm  after midnight.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Partly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 35. North wind around 15 mph, with gusts as high as 25 mph.
Monday
Increasing clouds, with a high near 54. North wind around 11 mph, with gusts as high as 21 mph.
Monday Night
A chance of sprinkles after 2am. Mostly cloudy, with a low around 36. East wind around 7 mph.
Tuesday
Mostly sunny, with a high near 61. Southeast wind 6 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 40. Southeast wind around 6 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 88.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 42. Chance of precipitation is 60%.
Friday
A 40 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 52.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
2:51 am CDT Mar 23, 2026
3am CDT Mar 23, 2026-6pm CDT Mar 29, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database