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.

Fog/Mist

47°F

8°C

Humidity 97%
Wind Speed E 6 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 46°F (8°C)
Visibility 1.00 mi
Wind Chill44°F (7°C)
Last update 27 Dec 4:53 am CST
Extended Forecast for

Dupo IL

Dense Fog Advisory December 27, 05:17am until December 27, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory December 27, 05:17am until December 27, 09:00am

    NOW until 9:00am Sat

    Dense Fog Advisory

  • Today

    High: 64 °F

    Areas Dense
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of showers after midnight. Cloudy, with a low around 60. South wind 7 to 9 mph.

    Low: 60 °F

    Cloudy then
    Slight Chance
    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 3pm. Temperature rising to near 71 by 11am, then falling to around 57 during the remainder of the day. South wind 8 to 17 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.

    High: 71 °F⇓

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 19. Breezy, with a west wind 18 to 22 mph, with gusts as high as 34 mph.

    Low: 19 °F

    Chance
    Showers and
    Blustery then
    Partly Cloudy
    and Breezy

  • Monday

    Monday: Mostly sunny, with a high near 28. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 34 mph.

    High: 28 °F

    Mostly Sunny
    and Blustery
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 35.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Today
Areas of dense fog before 10am. Otherwise, mostly cloudy, with a high near 64. Light east wind becoming southeast 5 to 10 mph in the morning.
Tonight
A 20 percent chance of showers after midnight. Cloudy, with a low around 60. South wind 7 to 9 mph.
Sunday
Showers, with thunderstorms also possible after 3pm. Temperature rising to near 71 by 11am, then falling to around 57 during the remainder of the day. South wind 8 to 17 mph becoming west in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.
Sunday Night
A 50 percent chance of showers before 9pm. Cloudy during the early evening, then gradual clearing, with a low around 19. Breezy, with a west wind 18 to 22 mph, with gusts as high as 34 mph.
Monday
Mostly sunny, with a high near 28. Blustery, with a northwest wind 16 to 22 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Sunny, with a high near 35.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Mostly sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 24.
New Year's Day
Mostly sunny, with a high near 36.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Mostly sunny, with a high near 34.
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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:
4:41 am CST Dec 27, 2025
Forecast Valid:
5am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation