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

42°F

6°C

Humidity 53%
Wind Speed S 6 mph
Barometer 30.01 in (1016.1 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 13 Jan 2:53 am CST
Extended Forecast for

4 Miles WSW Smithton IL

  • Overnight

    Overnight: Mostly clear, with a low around 36. Southwest wind 6 to 8 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 65. West wind 9 to 14 mph, with gusts as high as 25 mph.

    High: 65 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain, mainly before 1am. Cloudy, with a low around 37. West wind 8 to 11 mph.

    Low: 37 °F

    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a temperature falling to around 32 by 5pm. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 40 °F⇓

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17. North wind 7 to 14 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 45. Breezy.

    High: 45 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 36. Southwest wind 6 to 8 mph.
Tuesday
Increasing clouds, with a high near 65. West wind 9 to 14 mph, with gusts as high as 25 mph.
Tuesday Night
A 40 percent chance of rain, mainly before 1am. Cloudy, with a low around 37. West wind 8 to 11 mph.
Wednesday
Partly sunny, with a temperature falling to around 32 by 5pm. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly clear, with a low around 17. North wind 7 to 14 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 45. Breezy.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
Partly sunny, with a high near 32.
Saturday Night
Mostly cloudy, with a low around 11.
Sunday
Sunny, with a high near 26.
Sunday Night
Mostly clear, with a low around 13.
M.L.King Day
Sunny, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Smithton IL
 38.37°N 90.04°W (Elev. 499 ft)
Last Update:
2:41 am CST Jan 13, 2026
Forecast Valid:
3am CST Jan 13, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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