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

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

35°F

2°C

Humidity 93%
Wind Speed Calm
Barometer 29.95 in (1014.3 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 27 Feb 5:51 am CST
Extended Forecast for

Lambert-St. Louis International Airport 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 73. Light west wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. West wind around 7 mph becoming northeast after midnight.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of rain, mainly after noon. Mostly sunny, with a high near 64. East wind 6 to 10 mph becoming south in the afternoon.

    High: 64 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. North wind 10 to 14 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after noon. Mostly cloudy, with a high near 45. East wind 11 to 13 mph.

    High: 45 °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 48. Chance of precipitation is 40%.

    High: 48 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain. High near 52. Chance of precipitation is 80%.

    High: 52 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 73. Light west wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 39. West wind around 7 mph becoming northeast after midnight.
Saturday
A 30 percent chance of rain, mainly after noon. Mostly sunny, with a high near 64. East wind 6 to 10 mph becoming south in the afternoon.
Saturday Night
Partly cloudy, with a low around 30. North wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 45. East wind 11 to 13 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 48. Chance of precipitation is 40%.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 38. Chance of precipitation is 60%.
Tuesday
Rain. High near 52. Chance of precipitation is 80%.
Tuesday Night
Rain likely, with thunderstorms also possible after midnight. Cloudy, with a low around 41. Chance of precipitation is 70%.
Wednesday
Rain likely. Cloudy, with a high near 61. Chance of precipitation is 60%.
Wednesday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 49. Chance of precipitation is 70%.
Thursday
Rain likely. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lambert-St. Louis International Airport MO
 38.76°N 90.37°W (Elev. 551 ft)
Last Update:
5:51 am CST Feb 27, 2026
Forecast Valid:
5am CST Feb 27, 2026-6pm CST Mar 5, 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