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

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Mostly Cloudy

27°F

-3°C

Humidity 46%
Wind Speed N 7 mph
Barometer 30.27 in (1026.2 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 29 Jan 1:54 pm CST
Extended Forecast for

Chesterfield MO

  • This Afternoon

    This Afternoon: A 30 percent chance of snow, mainly after 5pm. Mostly cloudy, with a high near 27. Northeast wind around 6 mph.

    High: 27 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly before 9pm. Cloudy, with a low around 7. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 7 °F

    Snow Likely
    then Slight
    Chance Snow

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny and cold, with a high near 19. Light northwest wind becoming north 5 to 9 mph in the morning.

    High: 19 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 4. North wind around 9 mph, with gusts as high as 22 mph.

    Low: 4 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny and cold, with a high near 20. Northwest wind 6 to 10 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of snow, mainly after 5pm. Mostly cloudy, with a high near 27. Northeast wind around 6 mph.
Tonight
Snow likely, mainly before 9pm. Cloudy, with a low around 7. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Cloudy, then gradually becoming mostly sunny and cold, with a high near 19. Light northwest wind becoming north 5 to 9 mph in the morning.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 4. North wind around 9 mph, with gusts as high as 22 mph.
Saturday
Sunny and cold, with a high near 20. Northwest wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 3.
Sunday
A 20 percent chance of snow after noon. Partly sunny, with a high near 31.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 37.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
Mostly cloudy, with a high near 38.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24.
Wednesday
A 30 percent chance of snow. Mostly cloudy, with a high near 37.
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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:
2:07 pm CST Jan 29, 2026
Forecast Valid:
2pm CST Jan 29, 2026-6pm CST Feb 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation