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.

Rain

63°F

17°C

Humidity 90%
Wind Speed W 9 mph
Barometer 29.79 in (1008.0 mb)
Dewpoint 60°F (16°C)
Visibility 7.00 mi
Last update 18 Apr 12:54 am CDT
Extended Forecast for

Chesterfield MO

  • Overnight

    Overnight: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 47. Northwest wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

    Low: 47 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 60 °F

    Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 40 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 69. West wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. Northwest wind around 6 mph becoming light and variable after midnight.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 54.

    Low: 54 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59.

    Low: 59 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 47. Northwest wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Saturday
A 30 percent chance of showers, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind 14 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 40. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 69. West wind 5 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 42. Northwest wind around 6 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 72.
Monday Night
Clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chesterfield MO
 38.65°N 90.6°W (Elev. 466 ft)
Last Update:
10:51 pm CDT Apr 17, 2026
Forecast Valid:
1am CDT Apr 18, 2026-6pm CDT Apr 24, 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