National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

45°F

7°C

Humidity 81%
Wind Speed Vrbl 6 mph
Barometer 30.24 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 11 Apr 9:50 am CDT
Extended Forecast for

Chesterfield IL

  • Today

    Today: Partly sunny, with a high near 55. North wind 9 to 11 mph.

    High: 55 °F

    Partly Sunny

  • Tonight

    Tonight: Areas of frost after 2am. Otherwise, mostly clear, with a low around 34. North wind 5 to 7 mph becoming calm in the evening.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 61. Light southeast wind becoming south 5 to 9 mph in the morning.

    High: 61 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. South wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74. Breezy, with a south wind 14 to 20 mph, with gusts as high as 29 mph.

    High: 74 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 64.

    High: 64 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 55. North wind 9 to 11 mph.
Tonight
Areas of frost after 2am. Otherwise, mostly clear, with a low around 34. North wind 5 to 7 mph becoming calm in the evening.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 61. Light southeast wind becoming south 5 to 9 mph in the morning.
Saturday Night
Partly cloudy, with a low around 45. South wind 9 to 13 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 74. Breezy, with a south wind 14 to 20 mph, with gusts as high as 29 mph.
Sunday Night
Partly cloudy, with a low around 52.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 36.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 49.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield IL
 39.26°N 90.06°W (Elev. 600 ft)
Last Update:
9:22 am CDT Apr 11, 2025
Forecast Valid:
10am CDT Apr 11, 2025-6pm CDT Apr 17, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation