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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

83°F

28°C

Humidity 40%
Wind Speed S 6 mph
Barometer 29.73 in (1006.3 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 26 Mar 8:53 pm CDT
Extended Forecast for

4 Miles SW Waterloo IL

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then showers after 4am. Low around 40. Breezy, with a southwest wind 9 to 14 mph becoming north 15 to 20 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 90%.

    Low: 40 °F

    Chance
    T-storms then
    Showers and
    Breezy

  • Friday

    Friday: Showers, mainly before 7am. High near 53. Breezy, with a north wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 53 °F

    Showers and
    Breezy then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. North wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55. Northeast wind 5 to 7 mph becoming southeast in the afternoon.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. South wind around 7 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then showers after 4am. Low around 40. Breezy, with a southwest wind 9 to 14 mph becoming north 15 to 20 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 90%.
Friday
Showers, mainly before 7am. High near 53. Breezy, with a north wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Friday Night
Mostly clear, with a low around 31. North wind 7 to 13 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 55. Northeast wind 5 to 7 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 39. South wind around 7 mph.
Sunday
Partly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A 20 percent chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 85.
Tuesday Night
A 30 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 58.
Wednesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 77.
Wednesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 56.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
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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:
7:51 pm CDT Mar 26, 2026
Forecast Valid:
9pm CDT Mar 26, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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