Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Partly Cloudy

67°F

19°C

Humidity 79%
Wind Speed S 5 mph
Barometer 29.82 in (1009.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 9 Mar 9:53 pm CDT
Extended Forecast for

Trenton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 61. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 79. South wind 9 to 17 mph, with gusts as high as 24 mph.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain and thunderstorms, mainly after midnight.  Mostly cloudy, with a low around 57. South wind 14 to 17 mph, with gusts as high as 31 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then showers likely after 1pm.  Temperature rising to near 66 by 10am, then falling to around 50 during the remainder of the day. Breezy, with a southwest wind 16 to 22 mph becoming northwest in the afternoon.  Chance of precipitation is 90%.

    High: 66 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Breezy, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight.

    Low: 33 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. South wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 79. South wind 9 to 17 mph, with gusts as high as 24 mph.
Tuesday Night
A 50 percent chance of rain and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 57. South wind 14 to 17 mph, with gusts as high as 31 mph.
Wednesday
Rain likely and possibly a thunderstorm before 7am, then showers and possibly a thunderstorm between 7am and 1pm, then showers likely after 1pm. Temperature rising to near 66 by 10am, then falling to around 50 during the remainder of the day. Breezy, with a southwest wind 16 to 22 mph becoming northwest in the afternoon. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, with a low around 33. Breezy, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight.
Thursday
Sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Mostly cloudy, with a high near 63.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 64. Breezy.
Sunday Night
A chance of rain and snow. Partly cloudy, with a low around 28. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton IL
 38.6°N 89.69°W (Elev. 502 ft)
7:21 pm CDT Mar 9, 2026
11pm CDT Mar 9, 2026-6pm CDT Mar 16, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database