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.

Mostly Cloudy

47°F

8°C

Humidity 61%
Wind Speed N 16 mph
Barometer 30.16 in (1021.1 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 23 Mar 12:53 am CDT
Extended Forecast for

Lemay MO

  • Overnight

    Overnight: Mostly clear, with a low around 37. North wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 55. North wind around 9 mph.

    High: 55 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of sprinkles after 2am. Mostly cloudy, with a low around 37. East wind 5 to 7 mph.

    Low: 37 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62. Southeast wind around 7 mph.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. Southeast wind around 5 mph becoming calm after midnight.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.

    Low: 44 °F

    Chance
    T-storms then
    Rain Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 37. North wind 11 to 14 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 55. North wind around 9 mph.
Monday Night
A chance of sprinkles after 2am. Mostly cloudy, with a low around 37. East wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 62. Southeast wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 42. Southeast wind around 5 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 61.
Thursday
Sunny, with a high near 90.
Thursday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Friday
A 40 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 53.
Friday Night
Partly cloudy, with a low around 33.
Saturday
Sunny, with a high near 58.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 65.
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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:
1:25 am CDT Mar 23, 2026
Forecast Valid:
1am CDT Mar 23, 2026-6pm CDT Mar 29, 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