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

51°F

11°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in (1016.6 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 29 Sep 1:53 am CDT
Extended Forecast for

Summerfield IL

  • Overnight

    Overnight: Clear, with a low around 50. Calm wind.

    Low: 50 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the morning.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 63. South wind 3 to 5 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 89. South wind 5 to 13 mph.

    High: 89 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 70. South wind 7 to 9 mph.

    Low: 70 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 89.

    High: 89 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 50. Calm wind.
Tuesday
Sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the morning.
Tuesday Night
Increasing clouds, with a low around 63. South wind 3 to 5 mph.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 89. South wind 5 to 13 mph.
Wednesday Night
Mostly cloudy, with a low around 70. South wind 7 to 9 mph.
Thursday
A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 89.
Thursday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
Showers likely. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 58.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 71.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Sunday
Partly sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 71.
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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:
1:26 am CDT Sep 29, 2026
Forecast Valid:
2am CDT Sep 29, 2026-6pm CDT Oct 5, 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