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

  • This Afternoon

    This Afternoon: A 20 percent chance of rain before 5pm. Cloudy, with a high near 42. Northeast wind around 7 mph.

    High: 42 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Low around 39. East wind around 6 mph. Chance of precipitation is 80%.

    Low: 39 °F

    Cloudy then
    Rain

  • Tuesday

    Tuesday: Rain, with thunderstorms also possible after noon. High near 64. Southeast wind around 6 mph. Chance of precipitation is 80%.

    High: 64 °F

    Rain then
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain likely, then rain and possibly a thunderstorm after midnight. Patchy fog between 9pm and 10pm. Low around 52. East wind around 6 mph. Chance of precipitation is 80%.

    Low: 52 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 68. South wind 6 to 8 mph. Chance of precipitation is 80%.

    High: 68 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 56. Chance of precipitation is 80%.

    Low: 56 °F

    Rain

  • Thursday

    Thursday: Rain and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. High near 72. Chance of precipitation is 80%.

    High: 72 °F

    Rain then
    Chance Rain

  • Thursday Night

    Thursday Night: A chance of rain, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.

    Low: 56 °F

    Chance Rain
    then Chance
    T-storms

  • Friday

    Friday: A chance of rain and thunderstorms before noon, then a slight chance of rain. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    T-storms then
    Slight Chance
    Rain

Detailed Forecast

This Afternoon
A 20 percent chance of rain before 5pm. Cloudy, with a high near 42. Northeast wind around 7 mph.
Tonight
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Low around 39. East wind around 6 mph. Chance of precipitation is 80%.
Tuesday
Rain, with thunderstorms also possible after noon. High near 64. Southeast wind around 6 mph. Chance of precipitation is 80%.
Tuesday Night
Rain likely, then rain and possibly a thunderstorm after midnight. Patchy fog between 9pm and 10pm. Low around 52. East wind around 6 mph. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm. High near 68. South wind 6 to 8 mph. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 56. Chance of precipitation is 80%.
Thursday
Rain and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. High near 72. Chance of precipitation is 80%.
Thursday Night
A chance of rain, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Friday
A chance of rain and thunderstorms before noon, then a slight chance of rain. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Saturday
Rain and thunderstorms. High near 70. Chance of precipitation is 80%.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 49.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 64.
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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:
12:26 pm CST Mar 2, 2026
Forecast Valid:
2pm CST Mar 2, 2026-6pm CDT Mar 8, 2026
 
Forecast Discussion
 
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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