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.

Fair

69°F

21°C

Humidity 93%
Wind Speed Calm
Barometer 29.98 in (1014.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 25 Jun 5:53 am CDT
Extended Forecast for

Dupo IL

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

  • Today

    Today: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 40%.

    High: 87 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 69. Light and variable wind becoming southeast around 5 mph after midnight. Chance of precipitation is 80%.

    Low: 69 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers and thunderstorms, mainly before 4pm. High near 83. South wind 7 to 10 mph. Chance of precipitation is 80%.

    High: 83 °F

    Showers then
    T-storms
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm. Increasing clouds, with a low around 70. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 70 °F

    Showers
    Likely

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Light and variable wind. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 69. Light and variable wind becoming southeast around 5 mph after midnight. Chance of precipitation is 80%.
Friday
Showers and thunderstorms, mainly before 4pm. High near 83. South wind 7 to 10 mph. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm. Increasing clouds, with a low around 70. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 76.
Monday
Sunny, with a high near 96.
Monday Night
Clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Clear, with a low around 77.
Wednesday
Sunny and hot, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dupo IL
 38.51°N 90.21°W (Elev. 397 ft)
Last Update:
5:06 am CDT Jun 25, 2026
Forecast Valid:
6am 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