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

31°F

-1°C

Humidity 79%
Wind Speed Calm
Barometer 30.14 in (1021.0 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 2 Feb 11:53 pm CST
Extended Forecast for

2 Miles N Trenton IL

  • Overnight

    Overnight: A 20 percent chance of snow after 4am. Cloudy, with a low around 29. East wind 3 to 5 mph.

    Low: 29 °F

    Slight Chance
    Snow

  • Tuesday

    Tuesday: A chance of drizzle, snow, and freezing rain before 11am, then a slight chance of snow between 11am and noon. Mostly cloudy, with a high near 34. Northeast wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 30%.

    High: 34 °F

    Chance Wintry
    Mix then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19. North wind 5 to 7 mph.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 30. North wind 3 to 7 mph.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 14. Calm wind.

    Low: 14 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of snow after 4am. Cloudy, with a low around 29. East wind 3 to 5 mph.
Tuesday
A chance of drizzle, snow, and freezing rain before 11am, then a slight chance of snow between 11am and noon. Mostly cloudy, with a high near 34. Northeast wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 19. North wind 5 to 7 mph.
Wednesday
Partly sunny, with a high near 30. North wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 14. Calm wind.
Thursday
Partly sunny, with a high near 38.
Thursday Night
Mostly clear, with a low around 31.
Friday
Mostly sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 23.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 43.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Trenton IL
 38.63°N 89.69°W (Elev. 502 ft)
Last Update:
10:06 pm CST Feb 2, 2026
Forecast Valid:
12am CST Feb 3, 2026-6pm CST Feb 9, 2026
 
Forecast Discussion
 
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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