Hazardous Weather Conditions
Current conditions at
St. Louis Lambert International Airport (KSTL)
Lat: 38.75°NLon: 90.37°WElev: 604ft.
A Few Clouds
82°F
28°C
| Humidity | 74% |
| Wind Speed | SE 6 mph |
| Barometer | 30.05 in (1016.5 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 87°F (31°C) |
| Last update | 18 Jul 9:51 pm CDT |
Extended Forecast for
Saint Louis MO
Extreme Heat Warning July 19, 12:00pm until July 23, 07:00pm
Tonight
Low: 75 °F
Chance
T-stormsSaturday
High: 94 °F
Chance
T-stormsSaturday Night
Low: 78 °F
Slight Chance
T-stormsSunday
High: 97 °F
Mostly Sunny
then Slight
Chance
T-stormsSunday Night
Low: 78 °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
A 30 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 75. Light south wind.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 94. Heat index values as high as 106. South wind 5 to 7 mph becoming west in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 78. Southwest wind around 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 107. West wind around 6 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 78. 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
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Saint Louis MO
38.64°N 90.23°W (Elev. 538 ft)
38.64°N 90.23°W (Elev. 538 ft)
9:36 pm CDT Jul 18, 2025
10pm CDT Jul 18, 2025-6pm CDT Jul 25, 2025
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