Weather in Lake St. Louis, Missouri
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 04:26 PM ET · Refreshes every hour
79°F
Clear sky
Feels like 82°F
54%
Humidity
7 mph
Wind Speed
About Weather in Lake St. Louis
Lake St. Louis is located in Missouri (coordinates: 38.77989°N, 90.785586°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.