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.

Overcast

34°F

1°C

Humidity 40%
Wind Speed S 5 mph
Barometer 29.80 in (1010.0 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 15 Jan 9:54 pm CST
Extended Forecast for

Chesterfield MO

  • Tonight

    Tonight: Cloudy early, then gradual clearing, with a steady temperature around 34. South wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 34 °F

    Gradual
    Clearing

  • Friday

    Friday: A chance of sprinkles between 3pm and 4pm, then a slight chance of snow after 4pm. Mostly cloudy, with a high near 45. West wind 9 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 45 °F

    Partly Sunny
    then Slight
    Chance
    Sprinkles/Snow

  • Friday Night

    Friday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 21. West wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 21 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 27. West wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 27 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 11. Northwest wind 6 to 10 mph.

    Low: 11 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 24.

    High: 24 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Tonight
Cloudy early, then gradual clearing, with a steady temperature around 34. South wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph.
Friday
A chance of sprinkles between 3pm and 4pm, then a slight chance of snow after 4pm. Mostly cloudy, with a high near 45. West wind 9 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Friday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 21. West wind 11 to 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 27. West wind 11 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 11. Northwest wind 6 to 10 mph.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 14.
M.L.King Day
Sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 37.
Tuesday Night
Mostly clear, with a low around 26.
Wednesday
Mostly sunny, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 43.
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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:
9:41 pm CST Jan 15, 2026
Forecast Valid:
10pm CST Jan 15, 2026-6pm CST Jan 22, 2026
 
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Additional Resources

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Chance of Precipitation