Hazardous Weather Conditions
Current conditions at
St. Louis, Spirit Of St. Louis Airport (KSUS)
Lat: 38.66°NLon: 90.66°WElev: 463ft.
Fair
74°F
23°C
| Humidity | 94% |
| Wind Speed | Calm |
| Barometer | 29.98 in (1014.2 mb) |
| Dewpoint | 72°F (22°C) |
| Visibility | 9.00 mi |
| Last update | 19 Aug 3:54 am CDT |
Extended Forecast for
Lake St. Louis MO
Heat Advisory August 19, 04:47am until August 19, 08:00pm
NOW until 8:00pm Tue
Heat Advisory
Today
High: 93 °F
Slight Chance
T-stormsTonight
Low: 71 °F
Slight Chance
T-storms then
Partly CloudyWednesday
High: 87 °F
Mostly Sunny
Wednesday Night
Low: 65 °F
Mostly Clear
Thursday
High: 84 °F
Sunny
Thursday Night
Low: 64 °F
Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 65 °F
Mostly Clear
Detailed Forecast
Today
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93. Heat index values as high as 106. Light and variable wind becoming northwest 5 to 7 mph in the morning.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. North wind 3 to 7 mph.
Wednesday
Mostly sunny, with a high near 87. Northeast wind 5 to 9 mph.
Wednesday Night
Mostly clear, with a low around 65. Northeast wind 3 to 7 mph.
Thursday
Sunny, with a high near 84. Northeast wind 3 to 8 mph.
Thursday Night
Clear, with a low around 64.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 81.
Sunday Night
Mostly clear, with a low around 57.
Monday
Mostly sunny, with a high near 77.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Lake St. Louis MO
38.79°N 90.79°W (Elev. 512 ft)
38.79°N 90.79°W (Elev. 512 ft)
4:16 am CDT Aug 19, 2025
4am CDT Aug 19, 2025-6pm CDT Aug 25, 2025
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