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.

Fair

56°F

13°C

Humidity 39%
Wind Speed N 10 mph
Barometer 30.26 in (1024.7 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 6 Apr 7:53 pm CDT
Extended Forecast for

Lemay MO

  • Tonight

    Tonight: Increasing clouds, with a low around 39. Light north wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 23 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. East wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 40. East wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 74. Southeast wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 74 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind 7 to 9 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 40%.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Increasing clouds, with a low around 39. Light north wind increasing to 5 to 10 mph in the evening. Winds could gust as high as 23 mph.
Tuesday
Partly sunny, with a high near 56. East wind 9 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Increasing clouds, with a low around 40. East wind 7 to 9 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 74. Southeast wind 7 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind 7 to 9 mph.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 58.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
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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:
8:46 pm CDT Apr 6, 2026
Forecast Valid:
8pm CDT Apr 6, 2026-6pm CDT Apr 13, 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