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 76%
Wind Speed SE 3 mph
Barometer 30.08 in (1018.7 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 14 Mar 12:53 am CDT
Extended Forecast for

Summerfield IL

  • Overnight

    Overnight: Partly cloudy, with a low around 36. Northeast wind 3 to 6 mph.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 62. East wind 7 to 15 mph becoming southeast in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. South wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 4pm. High near 67. Windy, with a south wind 22 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.

    High: 67 °F

    Slight Chance
    Rain and
    Breezy then
    Rain and
    Windy

  • Sunday Night

    Sunday Night: Rain before 10pm, then rain and snow between 10pm and 1am, then a chance of snow after 1am. Some thunder is also possible. Low around 22. Breezy, with a southwest wind 24 to 29 mph becoming west in the evening. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 22 °F

    Rain/Snow and
    Breezy

  • Monday

    Monday: A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery.

    High: 28 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Blustery.

    Low: 13 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Chance Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 36. Northeast wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 62. East wind 7 to 15 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 53. South wind 10 to 18 mph, with gusts as high as 28 mph.
Sunday
Rain, with thunderstorms also possible after 4pm. High near 67. Windy, with a south wind 22 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.
Sunday Night
Rain before 10pm, then rain and snow between 10pm and 1am, then a chance of snow after 1am. Some thunder is also possible. Low around 22. Breezy, with a southwest wind 24 to 29 mph becoming west in the evening. Winds could gust as high as 41 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 20 percent chance of snow before 1pm. Mostly cloudy, with a high near 28. Blustery.
Monday Night
Partly cloudy, with a low around 13. Blustery.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 62.
Wednesday Night
Mostly clear, with a low around 39.
Thursday
Sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 47.
Friday
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:
1:26 am CDT Mar 14, 2026
Forecast Valid:
1am CDT Mar 14, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation