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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Lemay MO

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. Patchy fog before noon. High near 62. Calm wind becoming southeast around 5 mph. Chance of precipitation is 90%.

    High: 62 °F

    Chance
    T-storms and
    Patchy Fog
    then Showers

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Patchy fog after 8pm. Low around 53. Light and variable wind becoming south around 6 mph after midnight. Chance of precipitation is 90%.

    Low: 53 °F

    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers likely, mainly before 9am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 69. West wind 5 to 7 mph becoming light and variable in the afternoon. Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 59. South wind 3 to 7 mph. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers, mainly before noon. Partly sunny, with a high near 79. South wind 8 to 14 mph, with gusts as high as 28 mph.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 55. Chance of precipitation is 90%.

    Low: 55 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers before noon. Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. Patchy fog before noon. High near 62. Calm wind becoming southeast around 5 mph. Chance of precipitation is 90%.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11pm. Patchy fog after 8pm. Low around 53. Light and variable wind becoming south around 6 mph after midnight. Chance of precipitation is 90%.
Thursday
Showers likely, mainly before 9am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 69. West wind 5 to 7 mph becoming light and variable in the afternoon. Chance of precipitation is 60%.
Thursday Night
A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 3am, then a chance of showers after 3am. Mostly cloudy, with a low around 59. South wind 3 to 7 mph. Chance of precipitation is 50%.
Friday
A 40 percent chance of showers, mainly before noon. Partly sunny, with a high near 79. South wind 8 to 14 mph, with gusts as high as 28 mph.
Friday Night
A chance of showers and thunderstorms before midnight, then showers and possibly a thunderstorm between midnight and 3am, then showers after 3am. Low around 55. Chance of precipitation is 90%.
Saturday
A 40 percent chance of showers before noon. Partly sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 79.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
4:36 am CST Mar 4, 2026
Forecast Valid:
7am CST Mar 4, 2026-6pm CDT Mar 10, 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