Hazardous Weather Conditions
Current conditions at
St. Louis Lambert International Airport (KSTL)
Lat: 38.75°NLon: 90.37°WElev: 604ft.
Mostly Cloudy
87°F
31°C
| Humidity | 65% |
| Wind Speed | SE 6 mph |
| Barometer | 30.02 in (1015.4 mb) |
| Dewpoint | 74°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 95°F (35°C) |
| Last update | 18 Jul 5:51 pm CDT |
Extended Forecast for
Saint Louis MO
Extreme Heat Warning July 19, 12:00pm until July 23, 07:00pm
Tonight
Low: 75 °F
Scattered
T-stormsSaturday
High: 94 °F
Chance
T-stormsSaturday Night
Low: 77 °F
Slight Chance
T-stormsSunday
High: 97 °F
Mostly Sunny
then Slight
Chance
T-stormsSunday Night
Low: 77 °F
Chance
T-stormsMonday
High: 97 °F
Slight Chance
Showers then
Slight Chance
T-stormsMonday Night
Low: 78 °F
Mostly Clear
Tuesday
High: 98 °F
Hot
Tuesday Night
Low: 79 °F
Mostly Clear
Detailed Forecast
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Saturday
A chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 94. Heat index values as high as 105. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 77. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 109. West wind 3 to 6 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 77. South wind 3 to 5 mph.
Monday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny and hot, with a high near 97. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Mostly clear, with a low around 78.
Friday
Sunny and hot, with a high near 99.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Saint Louis MO
38.62°N 90.23°W (Elev. 489 ft)
38.62°N 90.23°W (Elev. 489 ft)
5:36 pm CDT Jul 18, 2025
6pm CDT Jul 18, 2025-6pm CDT Jul 25, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
