Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

30°F

-1°C

Humidity 82%
Wind Speed NE 6 mph
Barometer 30.11 in (1019.9 mb)
Dewpoint 25°F (-4°C)
Visibility 9.00 mi
Wind Chill24°F (-4°C)
Last update 3 Feb 2:53 am CST
Extended Forecast for

4 Miles SW Waterloo IL

  • Overnight

    Overnight: Cloudy, with a low around 28. Northeast wind around 6 mph.

    Low: 28 °F

    Cloudy

  • Tuesday

    Tuesday: A slight chance of freezing rain before 8am, then a slight chance of snow between 8am and 10am.  Mostly cloudy, with a high near 35. Northeast wind 6 to 11 mph becoming north in the afternoon.  Chance of precipitation is 20%.

    High: 35 °F

    Slight Chance
    Wintry Mix
    then Mostly
    Cloudy

  • Tuesday Night

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

    Low: 19 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30. North wind 5 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 40.

    High: 40 °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 51.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Cloudy, with a low around 28. Northeast wind around 6 mph.
Tuesday
A slight chance of freezing rain before 8am, then a slight chance of snow between 8am and 10am. Mostly cloudy, with a high near 35. Northeast wind 6 to 11 mph becoming north in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 19. North wind around 7 mph.
Wednesday
Mostly sunny, with a high near 30. North wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 15. Light and variable wind.
Thursday
Mostly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 32.
Friday
Sunny, with a high near 51.
Friday Night
Mostly clear, with a low around 26.
Saturday
Sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Mostly sunny, with a high near 44.
Sunday Night
Partly cloudy, with a low around 25.
Monday
Mostly sunny, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Waterloo IL
 38.29°N 90.19°W (Elev. 633 ft)
3:21 am CST Feb 3, 2026
3am 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