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.

Overcast

49°F

9°C

Humidity 86%
Wind Speed NW 6 mph
Barometer 29.94 in (1013.7 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 18 Apr 7:53 am CDT
Extended Forecast for

Lemay MO

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 58. Northwest wind around 15 mph, with gusts as high as 24 mph.

    High: 58 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Clear, with a low around 42. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 42 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 69. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. Northwest wind around 6 mph becoming calm after midnight.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 58. Northwest wind around 15 mph, with gusts as high as 24 mph.
Tonight
Clear, with a low around 42. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 69. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Sunday Night
Mostly clear, with a low around 42. Northwest wind around 6 mph becoming calm after midnight.
Monday
Sunny, with a high near 69. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 85.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
5:41 am CDT Apr 18, 2026
Forecast Valid:
8am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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