National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

75°F

24°C

Humidity 71%
Wind Speed Vrbl 5 mph
Barometer 29.92 in (1012.7 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 15 Oct 8:53 pm CDT
Extended Forecast for

Dupo IL

  • Tonight

    Tonight: Scattered showers, mainly before 2am. Increasing clouds, with a low around 50. Northwest wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 50 °F

    Scattered
    Showers

  • Friday

    Friday: Isolated showers after 4pm. Mostly cloudy, with a high near 56. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    High: 56 °F

    Partly Sunny
    then Isolated
    Showers and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 9 to 16 mph, with gusts as high as 28 mph.

    Low: 39 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Scattered showers, mainly before 2am. Increasing clouds, with a low around 50. Northwest wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Friday
Isolated showers after 4pm. Mostly cloudy, with a high near 56. Breezy, with a northwest wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 39. North wind 9 to 16 mph, with gusts as high as 28 mph.
Saturday
Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 36. Calm wind.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 50.
Thursday
Sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dupo IL
 38.51°N 90.21°W (Elev. 397 ft)
Last Update:
8:56 pm CDT Oct 15, 2026
Forecast Valid:
9pm CDT Oct 15, 2026-6pm CDT Oct 22, 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