Hazardous Weather Conditions
Current conditions at
St. Louis Lambert International Airport (KSTL)
Lat: 38.75°NLon: 90.37°WElev: 604ft.
Mostly Cloudy
82°F
28°C
| Humidity | 82% |
| Wind Speed | SW 5 mph |
| Barometer | 30.05 in (1016.1 mb) |
| Dewpoint | 76°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 89°F (32°C) |
| Last update | 30 Jul 6:51 am CDT |
Extended Forecast for
Saint Charles MO
Extreme Heat Warning July 30, 06:56am until July 30, 07:00pm
NOW until 7:00pm Wed
Extreme Heat Warning
Today
High: 94 °F
Patchy Fog
then Chance
T-stormsTonight
Low: 72 °F
T-storms
LikelyThursday
High: 79 °F
Chance
T-stormsThursday Night
Low: 64 °F
Slight Chance
T-storms then
Slight Chance
ShowersFriday
High: 79 °F
Mostly Sunny
Friday Night
Low: 60 °F
Mostly Clear
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 61 °F
Mostly Clear
Detailed Forecast
Today
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 106. Light and variable wind.
Tonight
Showers and thunderstorms likely, mainly before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 72. Northeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. North wind 5 to 10 mph.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 64. North wind 8 to 10 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 79. Northeast wind 8 to 11 mph.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 65.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Saint Charles MO
38.78°N 90.51°W (Elev. 597 ft)
38.78°N 90.51°W (Elev. 597 ft)
5:41 am CDT Jul 30, 2025
6am CDT Jul 30, 2025-6pm CDT Aug 5, 2025
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