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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

69°F

21°C

Humidity 93%
Wind Speed S 5 mph
Barometer 29.96 in (1014.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 25 Jun 1:53 am CDT
Extended Forecast for

Waterloo IL

Flood Watch June 25, 01:00pm until June 26, 07:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: A slight chance of showers and thunderstorms between 3am and 4am. Partly cloudy, with a low around 66. Light west wind. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Low around 68. Light and variable wind becoming southeast around 6 mph after midnight. Chance of precipitation is 80%.

    Low: 68 °F

    Chance
    T-storms then
    Heavy Rain

  • Friday

    Friday: Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then showers and thunderstorms likely after 4pm. Some of the storms could produce heavy rainfall. High near 82. Southwest wind 7 to 9 mph. Chance of precipitation is 90%.

    High: 82 °F

    Heavy Rain
    then T-storms

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 69. West wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 80%.

    Low: 69 °F

    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 74.

    Low: 74 °F

    Clear

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms between 3am and 4am. Partly cloudy, with a low around 66. Light west wind. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 85. Light and variable wind.
Thursday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Low around 68. Light and variable wind becoming southeast around 6 mph after midnight. Chance of precipitation is 80%.
Friday
Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then showers and thunderstorms likely after 4pm. Some of the storms could produce heavy rainfall. High near 82. Southwest wind 7 to 9 mph. Chance of precipitation is 90%.
Friday Night
Showers and possibly a thunderstorm. Low around 69. West wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Sunday
Sunny, with a high near 93.
Sunday Night
Clear, with a low around 74.
Monday
Sunny, with a high near 94.
Monday Night
Clear, with a low around 75.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Clear, with a low around 75.
Wednesday
Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo IL
 38.35°N 90.16°W (Elev. 650 ft)
Last Update:
1:51 am CDT Jun 25, 2026
Forecast Valid:
2am CDT Jun 25, 2026-6pm CDT Jul 1, 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