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

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm. Patchy fog. Otherwise, cloudy, with a low around 52. Light southwest wind. Chance of precipitation is 70%.

    Low: 52 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 8am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 68. West wind 3 to 7 mph. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, with a low around 57. Light and variable wind becoming south 5 to 7 mph after midnight.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 9am, then a slight chance of showers after noon. Partly sunny, with a high near 79. South wind 8 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 59. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.

    Low: 59 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers before noon. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

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

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm. Patchy fog. Otherwise, cloudy, with a low around 52. Light southwest wind. Chance of precipitation is 70%.
Thursday
Showers and thunderstorms likely, mainly before 8am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 68. West wind 3 to 7 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, with a low around 57. Light and variable wind becoming south 5 to 7 mph after midnight.
Friday
A slight chance of showers before 9am, then a slight chance of showers after noon. Partly sunny, with a high near 79. South wind 8 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 59. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.
Saturday
A 50 percent chance of showers before noon. Mostly cloudy, with a high near 69.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 77.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 60.
Tuesday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.
Wednesday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
4:06 am CST Mar 5, 2026
Forecast Valid:
5am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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