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.

Fair

67°F

19°C

Humidity 67%
Wind Speed S 8 mph
Barometer 29.91 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 31 Mar 3:55 am CDT
Extended Forecast for

4 Miles WNW Chesterfield IL

  • Today

    Today: A 30 percent chance of rain and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 32 mph.

    High: 82 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Rain and thunderstorms before 3am, then rain likely and possibly a thunderstorm between 3am and 4am, then a chance of rain and thunderstorms after 4am. Low around 53. Southwest wind 6 to 9 mph becoming northeast after midnight. Chance of precipitation is 90%.

    Low: 53 °F

    T-storms then
    Rain

  • Wednesday

    Wednesday: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 7am. High near 67. Southeast wind 8 to 13 mph. Chance of precipitation is 90%.

    High: 67 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Rain Likely

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 75. Breezy, with a south wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 90%.

    High: 75 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Rain Likely

  • Friday

    Friday: A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Slight Chance
    Rain then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Chance
    T-storms then
    Rain Likely

  • Saturday

    Saturday: Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 66. Breezy. Chance of precipitation is 70%.

    High: 66 °F

    Rain Likely
    and Breezy

Detailed Forecast

Today
A 30 percent chance of rain and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82. Breezy, with a southwest wind 13 to 22 mph, with gusts as high as 32 mph.
Tonight
Rain and thunderstorms before 3am, then rain likely and possibly a thunderstorm between 3am and 4am, then a chance of rain and thunderstorms after 4am. Low around 53. Southwest wind 6 to 9 mph becoming northeast after midnight. Chance of precipitation is 90%.
Wednesday
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 7am. High near 67. Southeast wind 8 to 13 mph. Chance of precipitation is 90%.
Wednesday Night
A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Thursday
Rain and possibly a thunderstorm. High near 75. Breezy, with a south wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 90%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Friday
A slight chance of rain, then a chance of rain and thunderstorms after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 66. Breezy. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Sunday
A 20 percent chance of rain. Partly sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 31.
Monday
Sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Chesterfield IL
 39.26°N 90.15°W (Elev. 541 ft)
Last Update:
4:16 am CDT Mar 31, 2026
Forecast Valid:
4am CDT Mar 31, 2026-6pm CDT Apr 6, 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