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

78°F

26°C

Humidity 48%
Wind Speed W 3 mph
Barometer 29.94 in (1013.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 Apr 6:53 pm CDT
Extended Forecast for

Summerfield IL

  • Tonight

    Tonight: Mostly clear, with a low around 58. South wind around 6 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Breezy, with a south wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon.

    High: 80 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 63. South wind 11 to 16 mph, with gusts as high as 23 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 74. South wind 11 to 14 mph becoming west in the afternoon. Chance of precipitation is 90%.

    High: 74 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 54. North wind around 7 mph. Chance of precipitation is 30%.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 58. South wind around 6 mph.
Thursday
Sunny, with a high near 80. Breezy, with a south wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 63. South wind 11 to 16 mph, with gusts as high as 23 mph.
Friday
Showers and possibly a thunderstorm. High near 74. South wind 11 to 14 mph becoming west in the afternoon. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 54. North wind around 7 mph. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 75.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 54.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 74.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Monday
Showers and possibly a thunderstorm. High near 79. Breezy. Chance of precipitation is 80%.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 69.
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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:
6:11 pm CDT Apr 22, 2026
Forecast Valid:
7pm CDT Apr 22, 2026-6pm CDT Apr 29, 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