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

55°F

13°C

Humidity 82%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 8 Oct 11:55 pm CDT
Extended Forecast for

3 Miles N Chesterfield IL

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, clear, with a low around 52. Light southeast wind.

    Low: 52 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 88. South wind 5 to 10 mph.

    High: 88 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. Southeast wind 5 to 7 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 85. South wind 3 to 8 mph.

    High: 85 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 57. Southeast wind 3 to 7 mph.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, clear, with a low around 52. Light southeast wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 88. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 58. Southeast wind 5 to 7 mph.
Saturday
Increasing clouds, with a high near 85. South wind 3 to 8 mph.
Saturday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 57. Southeast wind 3 to 7 mph.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 57.
Columbus Day
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny, with a high near 83.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 57.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 80.
Wednesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 59.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Chesterfield IL
 39.3°N 90.09°W (Elev. 515 ft)
Last Update:
10:21 pm CDT Oct 8, 2026
Forecast Valid:
12am CDT Oct 9, 2026-6pm CDT Oct 15, 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