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.

Fog/Mist

53°F

12°C

Humidity 100%
Wind Speed Calm
Barometer 30.04 in (1017.3 mb)
Dewpoint 53°F (12°C)
Visibility 2.50 mi
Last update 25 Dec 3:53 am CST
Extended Forecast for

Lemay MO

  • Christmas Day

    Christmas Day: Patchy dense fog before noon. Otherwise, mostly cloudy, with a high near 67. Light and variable wind.

    High: 67 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Light and variable wind becoming southwest 5 to 7 mph in the evening.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 71. West wind 5 to 8 mph becoming light and variable in the afternoon.

    High: 71 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 68. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 68 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after midnight. Cloudy, with a low around 58.

    Low: 58 °F

    Cloudy then
    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain, then rain likely and possibly a thunderstorm after noon. Cloudy, with a high near 68. Chance of precipitation is 70%.

    High: 68 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain and snow before midnight. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.

    Low: 21 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 29.

    High: 29 °F

    Sunny

Detailed Forecast

Christmas Day
Patchy dense fog before noon. Otherwise, mostly cloudy, with a high near 67. Light and variable wind.
Tonight
Mostly cloudy, with a low around 57. Light and variable wind becoming southwest 5 to 7 mph in the evening.
Friday
Sunny, with a high near 71. West wind 5 to 8 mph becoming light and variable in the afternoon.
Friday Night
Partly cloudy, with a low around 47. Calm wind.
Saturday
Mostly cloudy, with a high near 68. Calm wind becoming southeast 5 to 8 mph in the morning.
Saturday Night
A 20 percent chance of rain after midnight. Cloudy, with a low around 58.
Sunday
A chance of rain, then rain likely and possibly a thunderstorm after noon. Cloudy, with a high near 68. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.
Monday
Sunny, with a high near 29.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Sunny, with a high near 37.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Partly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lemay MO
 38.53°N 90.29°W (Elev. 456 ft)
Last Update:
3:16 am CST Dec 25, 2025
Forecast Valid:
4am CST Dec 25, 2025-6pm CST Dec 31, 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