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

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

77°F

25°C

Humidity 36%
Wind Speed W 8 mph
Barometer 29.70 in (1004.6 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 15 May 9:51 pm CDT
Extended Forecast for

Saint Louis MO

  • Tonight

    Tonight: Mostly clear, with a low around 61. Southwest wind around 6 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Showers and thunderstorms likely, mainly between 4pm and 5pm. Sunny, with a high near 89. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 60%.

    High: 89 °F

    Sunny then
    T-storms
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. West wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. West wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers. Mostly sunny, with a high near 80.

    High: 80 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.

    Low: 64 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 80. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Monday Night

    Monday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    Heavy Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 61. Southwest wind around 6 mph.
Friday
Showers and thunderstorms likely, mainly between 4pm and 5pm. Sunny, with a high near 89. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 59. West wind 9 to 13 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 78. West wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 59. West wind around 6 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 80.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Monday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 80. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 67. Chance of precipitation is 80%.
Tuesday
Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%.
Tuesday Night
Showers and thunderstorms. Low around 62. Chance of precipitation is 80%.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 71.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 55.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Louis MO
 38.62°N 90.23°W (Elev. 489 ft)
Last Update:
7:52 pm CDT May 15, 2025
Forecast Valid:
10pm CDT May 15, 2025-6pm CDT May 22, 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