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

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Mostly Cloudy

40°F

4°C

Humidity 70%
Wind Speed Calm
Barometer 30.05 in (1018.0 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 28 Feb 7:54 am CST
Extended Forecast for

Chesterfield MO

  • Today

    Today: A 30 percent chance of rain, mainly after 1pm. Increasing clouds, with a high near 66. East wind 5 to 7 mph becoming south in the afternoon.

    High: 66 °F

    Chance Rain

  • Tonight

    Tonight: A 20 percent chance of rain before 8pm. Mostly clear, with a low around 30. North wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Sunday

    Sunday: A slight chance of rain and snow after noon. Mostly cloudy, with a high near 46. Northeast wind around 9 mph. Chance of precipitation is 20%.

    High: 46 °F

    Partly Sunny
    then Slight
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow before 3am, then rain and snow likely. Low around 32. Northeast wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Snow then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 44. Southeast wind 8 to 10 mph. Chance of precipitation is 50%.

    High: 44 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain. Low around 37. Chance of precipitation is 80%.

    Low: 37 °F

    Rain

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm. High near 60. Chance of precipitation is 90%.

    High: 60 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, with thunderstorms also possible after midnight. Low around 49. Chance of precipitation is 80%.

    Low: 49 °F

    Rain

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm. Cloudy, with a high near 66. Chance of precipitation is 70%.

    High: 66 °F

    Rain Likely

Detailed Forecast

Today
A 30 percent chance of rain, mainly after 1pm. Increasing clouds, with a high near 66. East wind 5 to 7 mph becoming south in the afternoon.
Tonight
A 20 percent chance of rain before 8pm. Mostly clear, with a low around 30. North wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday
A slight chance of rain and snow after noon. Mostly cloudy, with a high near 46. Northeast wind around 9 mph. Chance of precipitation is 20%.
Sunday Night
Snow before 3am, then rain and snow likely. Low around 32. Northeast wind around 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday
A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 44. Southeast wind 8 to 10 mph. Chance of precipitation is 50%.
Monday Night
Rain. Low around 37. Chance of precipitation is 80%.
Tuesday
Rain and possibly a thunderstorm. High near 60. Chance of precipitation is 90%.
Tuesday Night
Rain, with thunderstorms also possible after midnight. Low around 49. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 66. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Partly sunny, with a high near 71.
Thursday Night
A 50 percent chance of rain. Partly cloudy, with a low around 54.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.65°N 90.6°W (Elev. 466 ft)
Last Update:
7:56 am CST Feb 28, 2026
Forecast Valid:
8am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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