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

43°F

6°C

Humidity 100%
Wind Speed S 3 mph
Barometer 29.57 in (1001.0 mb)
Dewpoint 43°F (6°C)
Visibility 0.25 mi
Last update 19 Feb 4:53 am CST
Extended Forecast for

Summerfield IL

Dense Fog Advisory until February 19, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until February 19, 09:00am

    NOW until 9:00am Thu

    Dense Fog Advisory

  • Overnight

    Low: 53 °F

    Patchy Fog

  • Thursday

    Thursday: Rain and thunderstorms likely before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 67. South wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 67 °F

    T-storms
    Likely and
    Patchy Fog

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36. Breezy, with a west wind 11 to 20 mph, with gusts as high as 32 mph.

    Low: 36 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Sunny, with a high near 49. West wind 13 to 18 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30. Calm wind becoming north around 6 mph after midnight.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 38. Breezy.

    High: 38 °F

    Sunny and
    Breezy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 53. South wind around 6 mph.
Thursday
Rain and thunderstorms likely before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 67. South wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 36. Breezy, with a west wind 11 to 20 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 49. West wind 13 to 18 mph decreasing to 6 to 11 mph in the afternoon. Winds could gust as high as 29 mph.
Friday Night
Partly cloudy, with a low around 30. Calm wind becoming north around 6 mph after midnight.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Sunny, with a high near 38. Breezy.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 36.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Summerfield IL
 38.61°N 89.75°W (Elev. 482 ft)
Last Update:
4:26 am CST Feb 19, 2026
Forecast Valid:
5am CST Feb 19, 2026-6pm CST Feb 25, 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