National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fog/Mist

40°F

4°C

Humidity 89%
Wind Speed SE 3 mph
Barometer 30.17 in (1022.3 mb)
Dewpoint 37°F (3°C)
Visibility 6.00 mi
Last update 2 Mar 7:54 pm CST
Extended Forecast for

Lake St. Louis MO

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Patchy fog before 4am, then patchy fog after 5am. Low around 38. East wind 3 to 5 mph. Chance of precipitation is 90%.

    Low: 38 °F

    Patchy Fog
    then Rain and
    Patchy Fog

  • Tuesday

    Tuesday: Rain before noon, then a chance of rain and thunderstorms between noon and 2pm, then rain likely and possibly a thunderstorm after 2pm. High near 60. East wind 3 to 6 mph. Chance of precipitation is 90%.

    High: 60 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, with thunderstorms also possible after 9pm. Patchy fog between midnight and 1am. Low around 49. Northeast wind around 7 mph. Chance of precipitation is 90%.

    Low: 49 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 65. East wind around 6 mph becoming calm. Chance of precipitation is 90%.

    High: 65 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm before midnight, then rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Low around 54. South wind 3 to 6 mph. Chance of precipitation is 90%.

    Low: 54 °F

    Rain

  • Thursday

    Thursday: Rain likely and possibly a thunderstorm. Partly sunny, with a high near 71. Chance of precipitation is 70%.

    High: 71 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

    Low: 55 °F

    Chance Rain
    then Chance
    T-storms

  • Friday

    Friday: A chance of rain and thunderstorms. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Chance
    T-storms then
    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 58. Chance of precipitation is 80%.

    Low: 58 °F

    Chance
    T-storms then
    Rain

Detailed Forecast

Tonight
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Patchy fog before 4am, then patchy fog after 5am. Low around 38. East wind 3 to 5 mph. Chance of precipitation is 90%.
Tuesday
Rain before noon, then a chance of rain and thunderstorms between noon and 2pm, then rain likely and possibly a thunderstorm after 2pm. High near 60. East wind 3 to 6 mph. Chance of precipitation is 90%.
Tuesday Night
Rain, with thunderstorms also possible after 9pm. Patchy fog between midnight and 1am. Low around 49. Northeast wind around 7 mph. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. High near 65. East wind around 6 mph becoming calm. Chance of precipitation is 90%.
Wednesday Night
Rain and possibly a thunderstorm before midnight, then rain between midnight and 3am, then rain and possibly a thunderstorm after 3am. Low around 54. South wind 3 to 6 mph. Chance of precipitation is 90%.
Thursday
Rain likely and possibly a thunderstorm. Partly sunny, with a high near 71. Chance of precipitation is 70%.
Thursday Night
A chance of rain, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Friday
A chance of rain and thunderstorms. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after midnight. Low around 58. Chance of precipitation is 80%.
Saturday
Rain likely and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. Cloudy, with a high near 69. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 46.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 66.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 49.
Monday
A 30 percent chance of rain. Sunny, with a high near 71.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake St. Louis MO
 38.79°N 90.79°W (Elev. 512 ft)
Last Update:
4:56 pm CST Mar 2, 2026
Forecast Valid:
8pm CST Mar 2, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation