National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

43°F

6°C

Humidity 86%
Wind Speed SE 3 mph
Barometer 30.08 in (1018.5 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 14 Nov 1:53 am CST
Extended Forecast for

Smithton IL

  • Overnight

    Overnight: Partly cloudy, with a low around 47. South wind around 6 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. Southwest wind 6 to 10 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. South wind 7 to 9 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Southwest wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44. North wind 6 to 8 mph.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 47. South wind around 6 mph.
Friday
Mostly sunny, with a high near 76. Southwest wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 59. South wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 78. Southwest wind 9 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Mostly clear, with a low around 44. North wind 6 to 8 mph.
Sunday
Sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 38.
Monday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 63.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
Wednesday Night
Rain likely. Cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Smithton IL
 38.41°N 89.99°W (Elev. 453 ft)
Last Update:
12:56 am CST Nov 14, 2025
Forecast Valid:
2am CST Nov 14, 2025-6pm CST Nov 20, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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