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

49°F

9°C

Humidity 86%
Wind Speed S 3 mph
Barometer 30.06 in (1018.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 14 Nov 4:53 am CST
Extended Forecast for

Trenton IL

  • Today

    Today: Sunny, with a high near 77. Southwest wind 7 to 11 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 59. Southwest wind 9 to 11 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 78. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 44. West wind around 8 mph becoming north after midnight.

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. Northwest wind 5 to 7 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.

    Low: 44 °F

    Rain Likely

  • Tuesday

    Tuesday: A 20 percent chance of rain before noon. Partly sunny, with a high near 56.

    High: 56 °F

    Slight Chance
    Rain then
    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 77. Southwest wind 7 to 11 mph.
Tonight
Increasing clouds, with a low around 59. Southwest wind 9 to 11 mph.
Saturday
Mostly sunny, with a high near 78. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 44. West wind around 8 mph becoming north after midnight.
Sunday
Sunny, with a high near 59. Northwest wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 39.
Monday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 57.
Monday Night
Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Tuesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 56.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 38.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 53.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Thursday
Rain likely. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trenton IL
 38.6°N 89.69°W (Elev. 502 ft)
Last Update:
5:16 am CST Nov 14, 2025
Forecast Valid:
5am CST Nov 14, 2025-6pm CST Nov 20, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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