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

47°F

8°C

Humidity 46%
Wind Speed W 9 mph
Barometer 30.33 in (1027.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 12 Mar 11:53 am CDT
Extended Forecast for

Dupo IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 57. West wind 7 to 9 mph becoming southwest.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 44. South wind 10 to 18 mph, with gusts as high as 31 mph.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 62. West wind 11 to 15 mph, with gusts as high as 26 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. Northwest wind around 6 mph becoming light and variable.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 65. Southeast wind 6 to 11 mph.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 68. Breezy. Chance of precipitation is 80%.

    High: 68 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 23. Breezy. Chance of precipitation is 60%.

    Low: 23 °F

    Rain/Snow
    Likely and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 34. Breezy.

    High: 34 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 57. West wind 7 to 9 mph becoming southwest.
Tonight
Partly cloudy, with a low around 44. South wind 10 to 18 mph, with gusts as high as 31 mph.
Friday
Mostly sunny, with a high near 62. West wind 11 to 15 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 37. Northwest wind around 6 mph becoming light and variable.
Saturday
Partly sunny, with a high near 65. Southeast wind 6 to 11 mph.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 68. Breezy. Chance of precipitation is 80%.
Sunday Night
Rain likely, possibly mixed with snow before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 23. Breezy. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 34. Breezy.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dupo IL
 38.51°N 90.21°W (Elev. 397 ft)
Last Update:
11:11 am CDT Mar 12, 2026
Forecast Valid:
12pm CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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