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Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

37°F

3°C

Humidity 96%
Wind Speed Calm
Barometer 30.04 in (1017.4 mb)
Dewpoint 36°F (2°C)
Visibility 7.00 mi
Last update 15 Feb 10:53 pm CST
Extended Forecast for

Sauget IL

Dense Fog Advisory until February 16, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until February 16, 09:00am

    NOW until 9:00am Mon

    Dense Fog Advisory

  • Tonight

    Low: 36 °F

    Patchy Dense
    Fog

  • Washington's Birthday

    Washington's Birthday: Patchy dense fog between 7am and 8am. Otherwise, mostly sunny, with a high near 66. Light south wind increasing to 5 to 10 mph in the morning.

    High: 66 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. South wind 5 to 7 mph.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66. South wind 6 to 15 mph, with gusts as high as 26 mph.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 58. South wind 14 to 16 mph, with gusts as high as 30 mph.

    Low: 58 °F

    Cloudy then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after noon. Sunny, with a high near 75. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Tonight
Patchy dense fog after 2am. Otherwise, partly cloudy, with a low around 36. Calm wind.
Washington's Birthday
Patchy dense fog between 7am and 8am. Otherwise, mostly sunny, with a high near 66. Light south wind increasing to 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 43. South wind 5 to 7 mph.
Tuesday
Mostly cloudy, with a high near 66. South wind 6 to 15 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 58. South wind 14 to 16 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
A slight chance of showers, with thunderstorms also possible after noon. Sunny, with a high near 75. Chance of precipitation is 20%.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40.
Friday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 54.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 32.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 50.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sauget IL
 38.6°N 90.18°W (Elev. 404 ft)
Last Update:
10:16 pm CST Feb 15, 2026
Forecast Valid:
11pm CST Feb 15, 2026-6pm CST Feb 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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