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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

37°F

3°C

Humidity 54%
Wind Speed N 6 mph
Barometer 30.68 in (1039.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 28 Mar 8:53 am CDT
Extended Forecast for

4 Miles SW Waterloo IL

Freeze Warning March 28, 08:57am until March 28, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning March 28, 08:57am until March 28, 09:00am

    NOW until 9:00am Sat

    Freeze Warning

  • Today

    High: 56 °F

    Frost then
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. South wind around 7 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 69. South wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 69 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 81. South wind 13 to 17 mph, with gusts as high as 26 mph.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 40%.

    High: 84 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Rain

Detailed Forecast

Today
Widespread frost before 9am. Otherwise, sunny, with a high near 56. Light and variable wind becoming southeast 5 to 7 mph in the morning.
Tonight
Mostly clear, with a low around 38. South wind around 7 mph.
Sunday
Partly sunny, with a high near 69. South wind 8 to 14 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 56. South wind around 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 81. South wind 13 to 17 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 40%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 48. Chance of precipitation is 80%.
Wednesday
Rain likely, mainly before 1pm. Cloudy, with a high near 56. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41.
Thursday
Rain likely. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 44.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 69.
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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:
8:16 am CDT Mar 28, 2026
Forecast Valid:
8am CDT Mar 28, 2026-6pm CDT Apr 3, 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