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.

Fair

55°F

13°C

Humidity 64%
Wind Speed SW 8 mph
Barometer 29.98 in (1015.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 27 Feb 9:53 am CST
Extended Forecast for

Lemay MO

Red Flag Warning February 27, 12:00pm until February 27, 06:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Sunny, with a high near 72. Light southwest wind increasing to 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 40. Southwest wind 5 to 7 mph becoming northeast after midnight.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of rain between 3pm and 5pm. Mostly sunny, with a high near 68. Light and variable wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 20%.

    High: 68 °F

    Sunny then
    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32. South wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 21 mph.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 47. East wind around 9 mph.

    High: 47 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Rain and snow. Low around 33. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow

  • Monday

    Monday: A chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

  • Tuesday

    Tuesday: Rain. High near 54. Chance of precipitation is 80%.

    High: 54 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 72. Light southwest wind increasing to 9 to 14 mph in the afternoon. Winds could gust as high as 23 mph.
Tonight
Mostly clear, with a low around 40. Southwest wind 5 to 7 mph becoming northeast after midnight.
Saturday
A slight chance of rain between 3pm and 5pm. Mostly sunny, with a high near 68. Light and variable wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 32. South wind 6 to 10 mph becoming north after midnight. Winds could gust as high as 21 mph.
Sunday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 47. East wind around 9 mph.
Sunday Night
Rain and snow. Low around 33. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
A chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36.
Tuesday
Rain. High near 54. Chance of precipitation is 80%.
Tuesday Night
Rain likely, with thunderstorms also possible after midnight. Cloudy, with a low around 43. Chance of precipitation is 70%.
Wednesday
Rain likely. Cloudy, with a high near 63. Chance of precipitation is 60%.
Wednesday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Thursday
Rain likely. Partly sunny, with a high near 69. Chance of precipitation is 60%.
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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:
10:31 am CST Feb 27, 2026
Forecast Valid:
10am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
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