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.

Overcast

48°F

9°C

Humidity 83%
Wind Speed NW 16 G 24 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 11 Mar 1:53 pm CDT
Extended Forecast for

Lemay MO

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 4pm. Cloudy, with a steady temperature around 46. Northwest wind around 16 mph, with gusts as high as 30 mph.

    High: 46 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 33. Northwest wind 6 to 16 mph, with gusts as high as 28 mph.

    Low: 33 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Sunny, with a high near 55. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 44. South wind 9 to 15 mph, with gusts as high as 29 mph.

    Low: 44 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 62. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 62 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely and possibly a thunderstorm, then rain after 1pm. High near 67. Chance of precipitation is 80%.

    High: 67 °F

    Rain

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 4pm. Cloudy, with a steady temperature around 46. Northwest wind around 16 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 33. Northwest wind 6 to 16 mph, with gusts as high as 28 mph.
Thursday
Sunny, with a high near 55. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 44. South wind 9 to 15 mph, with gusts as high as 29 mph.
Friday
Partly sunny, with a high near 62. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 67. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow before 1am. Mostly cloudy, with a low around 25. Breezy. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 37.
Monday Night
Mostly clear, with a low around 19.
Tuesday
Partly sunny, with a high near 44.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 57.
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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:
3:01 pm CDT Mar 11, 2026
Forecast Valid:
3pm CDT Mar 11, 2026-6pm CDT Mar 18, 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