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.

Fair

64°F

18°C

Humidity 79%
Wind Speed S 13 mph
Barometer 29.86 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 14 Nov 11:35 pm CST
Extended Forecast for

6 Miles SE Chesterfield IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. South wind 9 to 11 mph.

    Low: 58 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 77. South wind 9 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. North wind 5 to 9 mph.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57. North wind 3 to 6 mph.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of rain after noon. Mostly sunny, with a high near 57.

    High: 57 °F

    Sunny then
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.

    Low: 41 °F

    Rain Likely

  • Tuesday

    Tuesday: A 20 percent chance of rain before noon. Partly sunny, with a high near 57.

    High: 57 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. South wind 9 to 11 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 77. South wind 9 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Mostly clear, with a low around 39. North wind 5 to 9 mph.
Sunday
Sunny, with a high near 57. North wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 33. Calm wind.
Monday
A 40 percent chance of rain after noon. Mostly sunny, with a high near 57.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 41. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 57.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 57.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42.
Thursday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Chesterfield IL
 39.21°N 89.98°W (Elev. 568 ft)
Last Update:
8:51 pm CST Nov 14, 2025
Forecast Valid:
11pm CST Nov 14, 2025-6pm CST Nov 21, 2025
 
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