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 30%
Wind Speed S 8 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 13 Nov 2:53 pm CST
Extended Forecast for

Trenton ILSimilar City Names

  • Tonight

    Tonight: Mostly clear, with a low around 48. South wind around 7 mph.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 76. Southwest wind 6 to 10 mph.

    High: 76 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. South wind around 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 77. Southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 77 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North wind 6 to 10 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny
    then Slight
    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

Detailed Forecast

Tonight
Mostly clear, with a low around 48. South wind around 7 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 76. Southwest wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 59. South wind around 10 mph.
Saturday
Partly sunny, with a high near 77. Southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Mostly clear, with a low around 43. North wind 6 to 10 mph.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 38.
Monday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.
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 63.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 45.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
Wednesday Night
Rain likely. Cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton ILSimilar City Names
 38.6°N 89.69°W (Elev. 502 ft)
Last Update:
3:16 pm CST Nov 13, 2025
Forecast Valid:
3pm CST Nov 13, 2025-6pm CST Nov 20, 2025
 
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Additional Resources

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Chance of Precipitation