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.

Fair

60°F

16°C

Humidity 38%
Wind Speed S 6 mph
Barometer 29.63 in (1003.2 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 18 Feb 6:53 pm CST
Extended Forecast for

Summerfield IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. South wind around 6 mph.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 68. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon.

    High: 68 °F

    Chance
    T-storms and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39. West wind 13 to 17 mph, with gusts as high as 26 mph.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. West wind 8 to 18 mph, with gusts as high as 26 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. North wind around 6 mph.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain and snow after noon. Mostly sunny, with a high near 44. Chance of precipitation is 20%.

    High: 44 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow

  • Saturday Night

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

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 39. Breezy.

    High: 39 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. South wind around 6 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 68. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 39. West wind 13 to 17 mph, with gusts as high as 26 mph.
Friday
Sunny, with a high near 50. West wind 8 to 18 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 31. North wind around 6 mph.
Saturday
A slight chance of rain and snow after noon. Mostly sunny, with a high near 44. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Sunny, with a high near 39. Breezy.
Sunday Night
Mostly clear, with a low around 20.
Monday
Sunny, with a high near 38.
Monday Night
Mostly clear, with a low around 21.
Tuesday
Mostly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Summerfield IL
 38.61°N 89.75°W (Elev. 482 ft)
Last Update:
5:31 pm CST Feb 18, 2026
Forecast Valid:
7pm CST Feb 18, 2026-6pm CST Feb 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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