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 51%
Wind Speed SE 10 mph
Barometer 30.11 in (1019.8 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 8 Feb 3:53 pm CST
Extended Forecast for

5 Miles SW Smithton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 28. East wind around 6 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 56. Calm wind becoming south around 5 mph in the afternoon.

    High: 56 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Southeast wind around 7 mph becoming southwest after midnight.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. Southwest wind around 7 mph becoming north in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 3am, then a slight chance of snow. Mostly cloudy, with a low around 34. North wind around 6 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 45.

    High: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 28. East wind around 6 mph becoming calm in the evening.
Monday
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 56. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 40. Southeast wind around 7 mph becoming southwest after midnight.
Tuesday
Mostly sunny, with a high near 61. Southwest wind around 7 mph becoming north in the afternoon.
Tuesday Night
A slight chance of rain before 3am, then a slight chance of snow. Mostly cloudy, with a low around 34. North wind around 6 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 45.
Thursday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 33.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 46.
Friday Night
A 30 percent chance of rain. Partly cloudy, with a low around 31.
Saturday
A 50 percent chance of rain. Mostly cloudy, with a high near 46.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 33.
Sunday
A 20 percent chance of rain. Sunny, with a high near 51.
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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:
12:26 pm CST Feb 8, 2026
Forecast Valid:
4pm CST Feb 8, 2026-6pm CST Feb 15, 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