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

37°F

3°C

Humidity 70%
Wind Speed NW 8 mph
Barometer 30.30 in (1026.2 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 12 Mar 1:53 am CDT
Extended Forecast for

5 Miles SW Smithton IL

  • Overnight

    Overnight: Mostly clear, with a low around 30. Northwest wind 7 to 10 mph.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 54. West wind 5 to 9 mph becoming southwest in the afternoon.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 43. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 36 mph.

    Low: 43 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 61. West wind 14 to 17 mph, with gusts as high as 30 mph.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35. Northwest wind 5 to 7 mph becoming light and variable.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms, then rain after 1pm. High near 67. Breezy. Chance of precipitation is 80%.

    High: 67 °F

    Breezy.
    Chance Rain
    then Rain

  • Sunday Night

    Sunday Night: Rain and snow likely before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 23. Breezy. Chance of precipitation is 60%.

    Low: 23 °F

    Rain/Snow
    Likely and
    Breezy

Detailed Forecast

Overnight
Mostly clear, with a low around 30. Northwest wind 7 to 10 mph.
Thursday
Sunny, with a high near 54. West wind 5 to 9 mph becoming southwest in the afternoon.
Thursday Night
Increasing clouds, with a low around 43. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 36 mph.
Friday
Partly sunny, with a high near 61. West wind 14 to 17 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 35. Northwest wind 5 to 7 mph becoming light and variable.
Saturday
Partly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
A chance of rain and thunderstorms, then rain after 1pm. High near 67. Breezy. Chance of precipitation is 80%.
Sunday Night
Rain and snow likely before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 23. Breezy. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 34. Breezy.
Monday Night
Mostly clear, with a low around 16.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 30.
Wednesday
Partly sunny, with a high near 58.
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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:
1:26 am CDT Mar 12, 2026
Forecast Valid:
2am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation