Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75° N Lon: 90.37° W Elev: 604 ft.

Mostly Cloudy

86°F

30°C

Humidity 49%
Wind Speed S 13 G 17 mph
Barometer 29.92 in (1012.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 21 Sep 2:51 pm CDT
Detailed forecast for

St. Louis County

Tonight
Showers and numerous thunderstorms. Lows in the mid 60s. Southwest winds 5 to 10 mph, becoming south after midnight. Chance of rain 80 percent.
Monday
Mostly cloudy. Showers with isolated thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. Highs in the upper 70s. South winds 5 to 10 mph. Chance of rain 80 percent.
Monday Night
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the mid 60s. South winds around 5 mph. Chance of rain 50 percent.
Tuesday
Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. South winds around 5 mph. Chance of rain 60 percent.
Tuesday Night
Showers likely. A chance of thunderstorms, mainly in the evening. Lows in the mid 60s. Southeast winds around 5 mph. Chance of rain 70 percent.
Wednesday
Showers likely. A slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent.
Wednesday Night And Thursday
Mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Highs in the mid 70s. Chance of rain 50 percent.
Thursday Night And Friday
Partly cloudy. A 20 percent chance of showers. Lows in the upper 50s. Highs in the upper 70s.
Friday Night Through Sunday
Mostly clear. Lows in the upper 50s. Highs in the lower 80s.



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238 PM CDT Sun Sep 21 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database