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

66°F

19°C

Humidity 87%
Wind Speed S 5 mph
Barometer 29.93 in (1012.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 17 Apr 1:51 am CDT
Extended Forecast for

Saint Louis MO

  • Overnight

    Overnight: Partly cloudy, with a low around 61. South wind 3 to 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 87. South wind 6 to 14 mph, with gusts as high as 26 mph.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rainfall. Low around 49. South wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%.

    Low: 49 °F

    Showers
    Likely then
    Heavy Rain

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers. Cloudy through mid morning, then gradual clearing, with a high near 59. Northwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 59 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 61. South wind 3 to 5 mph.
Friday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 87. South wind 6 to 14 mph, with gusts as high as 26 mph.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Some of the storms could produce heavy rainfall. Low around 49. South wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%.
Saturday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers. Cloudy through mid morning, then gradual clearing, with a high near 59. Northwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 41. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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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:
1:26 am CDT Apr 17, 2026
Forecast Valid:
2am CDT Apr 17, 2026-6pm CDT Apr 23, 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