Current conditions at
St. Louis Lambert International Airport (KSTL)
Lat: 38.75°NLon: 90.37°WElev: 604ft.
Mostly Cloudy
76°F
24°C
| Humidity | 77% |
| Wind Speed | W 7 mph |
| Barometer | 30.04 in (1016.3 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Heat Index | 77°F (25°C) |
| Last update | 14 Oct 3:51 pm CDT |
Extended Forecast for
Saint Charles MO
This Afternoon
High: 76 °F
Slight Chance
ShowersTonight
Low: 67 °F
Cloudy then
Showers
LikelyThursday
High: 81 °F
Showers then
Chance
T-stormsThursday Night
Low: 49 °F
Chance
T-storms then
Chance
ShowersFriday
High: 56 °F
Mostly Cloudy
then Slight
Chance
ShowersFriday Night
Low: 41 °F
Mostly Cloudy
Saturday
High: 61 °F
Sunny
Saturday Night
Low: 41 °F
Clear
Sunday
High: 66 °F
Sunny
Detailed Forecast
This Afternoon
A 20 percent chance of showers. Cloudy, with a high near 76. Light northwest wind.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 60%.
Thursday
Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 81. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 49. Northwest wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 56. Northwest wind around 18 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 41.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 41.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 44.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 79.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
2:06 pm CDT Oct 14, 2026
4pm CDT Oct 14, 2026-6pm CDT Oct 21, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
