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

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

79°F

26°C

Humidity 47%
Wind Speed SW 13 G 21 mph
Barometer 29.93 in (1013.4 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 14 Nov 1:53 pm CST
Extended Forecast for

Lemay MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. South wind 7 to 10 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 60. South wind around 7 mph.

    Low: 60 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 79. South wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 45. North wind 5 to 7 mph.

    Low: 45 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61. North wind 3 to 6 mph.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.

    Low: 46 °F

    Rain Likely

  • Tuesday

    Tuesday: A 20 percent chance of rain before noon. Partly sunny, with a high near 57.

    High: 57 °F

    Slight Chance
    Rain then
    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 78. South wind 7 to 10 mph.
Tonight
Increasing clouds, with a low around 60. South wind around 7 mph.
Saturday
Mostly sunny, with a high near 79. South wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Mostly clear, with a low around 45. North wind 5 to 7 mph.
Sunday
Sunny, with a high near 61. North wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 40.
Monday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 58.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Tuesday
A 20 percent chance of rain before noon. Partly sunny, with a high near 57.
Tuesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 39.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 54.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Thursday
Rain likely. Mostly cloudy, with a high near 58. 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 90.26°W (Elev. 381 ft)
Last Update:
10:46 am CST Nov 14, 2025
Forecast Valid:
2pm CST Nov 14, 2025-6pm CST Nov 20, 2025
 
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