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.

Fair

66°F

19°C

Humidity 47%
Wind Speed S 8 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 4 Nov 5:53 pm CST
Extended Forecast for

Dupo IL

  • Tonight

    Tonight: Partly cloudy, with a low around 52. South wind 7 to 10 mph.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 70. Southwest wind 7 to 14 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 38. North wind around 6 mph becoming light and variable after midnight.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 65. Southeast wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 53. Southeast wind 8 to 10 mph becoming southwest after midnight.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before noon. Mostly sunny, with a high near 71.

    High: 71 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 52. South wind 7 to 10 mph.
Wednesday
Sunny, with a high near 70. Southwest wind 7 to 14 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
Clear, with a low around 38. North wind around 6 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 65. Southeast wind 5 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 53. Southeast wind 8 to 10 mph becoming southwest after midnight.
Friday
A 30 percent chance of showers before noon. Mostly sunny, with a high near 71.
Friday Night
Mostly clear, with a low around 44.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 40.
Sunday
Mostly sunny, with a high near 46.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Sunny, with a high near 44.
Monday Night
Mostly clear, with a low around 26.
Veterans Day
Mostly sunny, with a high near 55.
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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:
4:46 pm CST Nov 4, 2025
Forecast Valid:
6pm CST Nov 4, 2025-6pm CST Nov 11, 2025
 
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