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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

70°F

21°C

Humidity 49%
Wind Speed NW 13 G 21 mph
Barometer 29.97 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 13 May 2:15 am CDT
Extended Forecast for

4 Miles NW Chesterfield IL

  • Overnight

    Overnight: Mostly clear, with a low around 54. Northwest wind around 8 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 71. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.

    High: 71 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 44. North wind 5 to 9 mph becoming calm in the evening.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 72. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 53. Southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 53 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Northwest wind around 8 mph.
Wednesday
Sunny, with a high near 71. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Clear, with a low around 44. North wind 5 to 9 mph becoming calm in the evening.
Thursday
Sunny, with a high near 72. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 53. Southeast wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 60.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 66.
Monday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 78. Chance of precipitation is 70%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Chesterfield IL
 39.3°N 90.12°W (Elev. 522 ft)
Last Update:
2:01 am CDT May 13, 2026
Forecast Valid:
2am CDT May 13, 2026-6pm CDT May 19, 2026
 
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