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

75°F

24°C

Humidity 33%
Wind Speed S 15 G 24 mph
Barometer 30.13 in (1020.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 8 Apr 1:53 pm CDT
Extended Forecast for

4 Miles SW Waterloo IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 73. South wind 5 to 14 mph, with gusts as high as 23 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. South wind around 9 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57. South wind around 10 mph.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. South wind 7 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%.

    High: 75 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78.

    High: 78 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 73. South wind 5 to 14 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 54. South wind around 9 mph.
Thursday
Sunny, with a high near 77. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 57. South wind around 10 mph.
Friday
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. South wind 7 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 60.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65.
Monday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...
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:
2:41 pm CDT Apr 8, 2026
Forecast Valid:
2pm CDT Apr 8, 2026-6pm CDT Apr 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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