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

68°F

20°C

Humidity 65%
Wind Speed S 5 mph
Barometer 29.88 in (1011.8 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 14 Nov 7:53 pm CST
Extended Forecast for

3 Miles NNW Smithton IL

  • Tonight

    Tonight: Increasing clouds, with a low around 59. South wind 7 to 9 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 79. South wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 24 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45. North wind 6 to 8 mph.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. North wind 3 to 6 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of rain after noon. Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then 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

  • Tuesday

    Tuesday: A 20 percent chance of rain before noon. Partly sunny, with a high near 60.

    High: 60 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 59. South wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 79. South wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
Mostly clear, with a low around 45. North wind 6 to 8 mph.
Sunday
Sunny, with a high near 60. North wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 37. Calm wind.
Monday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 58.
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. Partly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 58.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 46.
Thursday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 45.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Smithton IL
 38.46°N 90.01°W (Elev. 499 ft)
Last Update:
8:51 pm CST Nov 14, 2025
Forecast Valid:
9pm CST Nov 14, 2025-6pm CST Nov 21, 2025
 
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