


Hazardous Weather Conditions
Current conditions at
St. Louis, Spirit Of St. Louis Airport (KSUS)
Lat: 38.66°NLon: 90.66°WElev: 463ft.
Fair
81°F
27°C
Humidity | 74% |
Wind Speed | Calm |
Barometer | 29.82 in (1008.8 mb) |
Dewpoint | 72°F (22°C) |
Visibility | 10.00 mi |
Heat Index | 85°F (29°C) |
Last update | 17 Jun 7:54 pm CDT |
Extended Forecast for
Marthasville MO
Tonight
Low: 69 °F
Chance
T-stormsWednesday
High: 83 °F
Chance
T-storms then
Heavy RainWednesday Night
Low: 64 °F
Heavy Rain
then Partly
CloudyJuneteenth
High: 85 °F
Sunny
Thursday Night
Low: 64 °F
Mostly Clear
Friday
High: 91 °F
Sunny
Friday Night
Low: 72 °F
Mostly Clear
Saturday
High: 95 °F
Sunny
Saturday Night
Low: 75 °F
Mostly Clear
Detailed Forecast
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 69. Calm wind becoming south around 5 mph after midnight.
Wednesday
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 83. Southwest wind 6 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 64. Southwest wind 5 to 7 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 85. Light northwest wind.
Thursday Night
Mostly clear, with a low around 64. Calm wind.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 95.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 95.
Monday Night
Mostly clear, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Marthasville MO
38.62°N 91.06°W (Elev. 476 ft)
38.62°N 91.06°W (Elev. 476 ft)
6:22 pm CDT Jun 17, 2025
8pm CDT Jun 17, 2025-6pm CDT Jun 24, 2025