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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

4 Miles SW Waterloo IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Patchy fog. Low around 53. West wind around 7 mph becoming south. Chance of precipitation is 100%.

    Low: 53 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms likely before 9am, then a slight chance of showers between 9am and 10am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 67. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A slight chance of showers between 8pm and 9pm, then a slight chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 57. Light and variable wind becoming south 5 to 10 mph in the evening. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Partly sunny, with a high near 77. Breezy, with a south wind 11 to 20 mph, with gusts as high as 33 mph.

    High: 77 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 59. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    T-storms then
    Rain

  • Saturday

    Saturday: A 50 percent chance of rain before noon. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Patchy fog. Low around 53. West wind around 7 mph becoming south. Chance of precipitation is 100%.
Thursday
Showers and thunderstorms likely before 9am, then a slight chance of showers between 9am and 10am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 67. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 60%.
Thursday Night
A slight chance of showers between 8pm and 9pm, then a slight chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 57. Light and variable wind becoming south 5 to 10 mph in the evening. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 77. Breezy, with a south wind 11 to 20 mph, with gusts as high as 33 mph.
Friday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 59. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday
A 50 percent chance of rain before noon. Mostly cloudy, with a high near 68.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Sunny, with a high near 64.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 75.
Monday Night
A 30 percent chance of rain and thunderstorms. Mostly clear, with a low around 60.
Tuesday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.
Wednesday
Rain likely. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
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:
12:26 am CST Mar 5, 2026
Forecast Valid:
1am CST Mar 5, 2026-6pm CDT Mar 11, 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