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

75°F

24°C

Humidity 34%
Wind Speed S 10 G 22 mph
Barometer 30.08 in (1018.4 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 21 Apr 11:53 am CDT
Extended Forecast for

Summerfield IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. Southwest wind 13 to 17 mph, with gusts as high as 25 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 10 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. South wind around 6 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. Breezy, with a south wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon.

    High: 80 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly sunny, with a high near 73.

    High: 73 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 79. Southwest wind 13 to 17 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 56. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 80. Breezy, with a south wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 73.
Saturday Night
A slight chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 53. Chance of precipitation is 20%.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
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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:
11:46 am CDT Apr 21, 2026
Forecast Valid:
12pm CDT Apr 21, 2026-6pm CDT Apr 27, 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