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

4 Miles SW Waterloo IL

  • Overnight

    Overnight: Cloudy, with a low around 28. East wind 3 to 5 mph.

    Low: 28 °F

    Cloudy

  • Tuesday

    Tuesday: A chance of freezing rain before 8am, then a chance of snow between 8am and noon.  Mostly cloudy, with a high near 34. Northeast wind 5 to 9 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 around 6 mph.

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

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

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 15. Light and variable wind.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Friday Night

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

    Low: 23 °F

    Mostly Clear

Detailed Forecast

Overnight
Cloudy, with a low around 28. East wind 3 to 5 mph.
Tuesday
A chance of freezing rain before 8am, then a chance of snow between 8am and noon. Mostly cloudy, with a high near 34. Northeast wind 5 to 9 mph becoming north in the afternoon. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 19. North wind around 6 mph.
Wednesday
Mostly sunny, with a high near 30. North wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 15. Light and variable wind.
Thursday
Mostly sunny, with a high near 41.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 49.
Friday Night
Mostly clear, with a low around 23.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 46.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Waterloo IL
 38.29°N 90.19°W (Elev. 633 ft)
10:06 pm CST Feb 2, 2026
12am CST Feb 3, 2026-6pm CST Feb 9, 2026
 
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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