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

56°F

13°C

Humidity 28%
Wind Speed N 12 mph
Barometer 30.00 in (1015.7 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 13 Mar 6:53 pm CDT
Extended Forecast for

4 Miles NNW Lebanon IL

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Northwest wind 5 to 7 mph becoming calm.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62. Southeast wind 6 to 15 mph.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. Southeast wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain, mainly between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 68. Breezy, with a south wind 21 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.

    High: 68 °F

    Breezy.
    Chance Rain
    then Showers

  • Sunday Night

    Sunday Night: Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then a chance of snow after 1am. Some thunder is also possible. Low around 23. Breezy, with a west wind 23 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Rain/Snow and
    Breezy

  • Monday

    Monday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery.

    High: 28 °F

    Chance Snow
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 13. Blustery.

    Low: 13 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. Northwest wind 5 to 7 mph becoming calm.
Saturday
Mostly sunny, with a high near 62. Southeast wind 6 to 15 mph.
Saturday Night
Partly cloudy, with a low around 54. Southeast wind 10 to 16 mph, with gusts as high as 25 mph.
Sunday
Rain, mainly between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 68. Breezy, with a south wind 21 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.
Sunday Night
Rain before 10pm, then snow, possibly mixed with rain between 10pm and 1am, then a chance of snow after 1am. Some thunder is also possible. Low around 23. Breezy, with a west wind 23 to 26 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery.
Monday Night
Mostly clear, with a low around 13. Blustery.
Tuesday
Sunny, with a high near 35.
Tuesday Night
A slight chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Lebanon IL
 38.65°N 89.83°W (Elev. 476 ft)
Last Update:
6:16 pm CDT Mar 13, 2026
Forecast Valid:
7pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation