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

39°F

4°C

Humidity 41%
Wind Speed SW 6 mph
Barometer 30.51 in (1033.6 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 11 Jan 3:53 pm CST
Extended Forecast for

Summerfield IL

  • Tonight

    Tonight: Clear, with a low around 25. Light and variable wind becoming southwest 5 to 7 mph in the evening.

    Low: 25 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 51. Southwest wind 6 to 10 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 35. Southwest wind 3 to 8 mph.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60. West wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38. West wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain and snow after noon. Mostly cloudy, with a high near 43. Breezy. Chance of precipitation is 20%.

    High: 43 °F

    Breezy.
    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. Blustery.

    Low: 19 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 25. Light and variable wind becoming southwest 5 to 7 mph in the evening.
Monday
Sunny, with a high near 51. Southwest wind 6 to 10 mph.
Monday Night
Mostly clear, with a low around 35. Southwest wind 3 to 8 mph.
Tuesday
Mostly sunny, with a high near 60. West wind 8 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38. West wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of rain and snow after noon. Mostly cloudy, with a high near 43. Breezy. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 19. Blustery.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 26.
Friday
Partly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 32.
Saturday Night
Partly cloudy, with a low around 14.
Sunday
Mostly sunny, with a high near 32.
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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:
3:16 pm CST Jan 11, 2026
Forecast Valid:
4pm CST Jan 11, 2026-6pm CST Jan 18, 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