National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

21°F

-6°C

Humidity 71%
Wind Speed Calm
Barometer 30.33 in (1027.7 mb)
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Last update 22 Jan 9:53 pm CST
Extended Forecast for

4 Miles SW Waterloo IL

Cold Weather Advisory January 24, 12:00am until January 24, 12:00pm
Winter Storm Warning January 24, 12:00am until January 25, 06:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning

  • Tonight

    Tonight: Increasing clouds, with a low around 11. Light and variable wind becoming north 11 to 16 mph after midnight. Winds could gust as high as 25 mph.

    Low: 11 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny and cold, with a high near 15. North wind 14 to 18 mph, with gusts as high as 26 mph.

    High: 15 °F

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 3am. Mostly cloudy, with a low around 5. Wind chill values as low as -10. Northeast wind around 13 mph, with gusts as high as 20 mph.

    Low: 5 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow. High near 11. Wind chill values as low as -10. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 11 °F

    Snow

  • Saturday Night

    Saturday Night: Snow. Low around 9. Northeast wind 8 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 9 °F

    Snow

  • Sunday

    Sunday: Snow likely, mainly before noon. Cloudy and cold, with a high near 15. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 15 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 0.

    Low: 0 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 6.

    Low: 6 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 11. Light and variable wind becoming north 11 to 16 mph after midnight. Winds could gust as high as 25 mph.
Friday
Partly sunny and cold, with a high near 15. North wind 14 to 18 mph, with gusts as high as 26 mph.
Friday Night
A 30 percent chance of snow, mainly after 3am. Mostly cloudy, with a low around 5. Wind chill values as low as -10. Northeast wind around 13 mph, with gusts as high as 20 mph.
Saturday
Snow. High near 11. Wind chill values as low as -10. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
Snow. Low around 9. Northeast wind 8 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Sunday
Snow likely, mainly before noon. Cloudy and cold, with a high near 15. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 0.
Monday
Sunny and cold, with a high near 18.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
Partly sunny, with a high near 28.
Wednesday Night
Partly cloudy, with a low around 5.
Thursday
Partly sunny, with a high near 21.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Waterloo IL
 38.29°N 90.19°W (Elev. 633 ft)
Last Update:
10:26 pm CST Jan 22, 2026
Forecast Valid:
10pm CST Jan 22, 2026-6pm CST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

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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