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.

Fog/Mist

34°F

1°C

Humidity 92%
Wind Speed Calm
Barometer 29.91 in (1013.0 mb)
Dewpoint 32°F (0°C)
Visibility 5.00 mi
Last update 1 Jan 9:53 pm CST
Extended Forecast for

Summerfield IL

  • Tonight

    Tonight: Patchy fog between 4am and 5am. Otherwise, cloudy, with a low around 29. Calm wind becoming north around 5 mph after midnight.

    Low: 29 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog between 7am and 8am. Otherwise, cloudy, with a high near 36. Northeast wind 5 to 7 mph.

    High: 36 °F

    Patchy Fog
    then Cloudy

  • Friday Night

    Friday Night: Cloudy, with a low around 28. Northeast wind 5 to 7 mph.

    Low: 28 °F

    Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 40. Northeast wind around 6 mph.

    High: 40 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Light north wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog between 4am and 5am. Otherwise, cloudy, with a low around 29. Calm wind becoming north around 5 mph after midnight.
Friday
Patchy fog between 7am and 8am. Otherwise, cloudy, with a high near 36. Northeast wind 5 to 7 mph.
Friday Night
Cloudy, with a low around 28. Northeast wind 5 to 7 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 40. Northeast wind around 6 mph.
Saturday Night
Mostly clear, with a low around 24. Light north wind.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 58.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 57.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 41.
Thursday
A 30 percent chance of rain. 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:
10:21 pm CST Jan 1, 2026
Forecast Valid:
10pm CST Jan 1, 2026-6pm CST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation