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

77°F

25°C

Humidity 39%
Wind Speed SE 9 mph
Barometer 30.00 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 10 Oct 4:45 pm CDT
Extended Forecast for

3 Miles NNE Chesterfield IL

  • Tonight

    Tonight: Partly cloudy, with a low around 49. Southeast wind 5 to 7 mph becoming calm in the evening.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 61. South wind 3 to 5 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Columbus Day

    Columbus Day: Sunny, with a high near 93. Southwest wind 5 to 13 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 69. South wind around 7 mph.

    Low: 69 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 65. Chance of precipitation is 50%.

    Low: 65 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 49. Southeast wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 87. Calm wind.
Sunday Night
Increasing clouds, with a low around 61. South wind 3 to 5 mph.
Columbus Day
Sunny, with a high near 93. Southwest wind 5 to 13 mph.
Monday Night
Clear, with a low around 69. South wind around 7 mph.
Tuesday
Sunny, with a high near 91.
Tuesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 65. Chance of precipitation is 50%.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 70%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Chesterfield IL
 39.3°N 90.06°W (Elev. 558 ft)
Last Update:
4:41 pm CDT Oct 10, 2026
Forecast Valid:
5pm CDT Oct 10, 2026-6pm CDT Oct 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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