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 86%
Wind Speed E 5 mph
Barometer 30.17 in (1022.4 mb)
Dewpoint 36°F (2°C)
Visibility 6.00 mi
Wind Chill36°F (2°C)
Last update 2 Mar 6:54 pm CST
Extended Forecast for

Ballwin MO

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Patchy fog between 10pm and 11pm. Low around 39. East wind around 5 mph. Chance of precipitation is 90%.

    Low: 39 °F

    Patchy Fog
    then Rain

  • Tuesday

    Tuesday: Rain and thunderstorms, mainly before 1pm, then rain likely and possibly a thunderstorm after 3pm. High near 61. East wind 3 to 5 mph. Chance of precipitation is 90%.

    High: 61 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, then rain and possibly a thunderstorm after midnight. Patchy fog between 11pm and 4am. Low around 50. Northeast wind around 6 mph. Chance of precipitation is 90%.

    Low: 50 °F

    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 67. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 90%.

    High: 67 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 55. South wind 3 to 6 mph. Chance of precipitation is 90%.

    Low: 55 °F

    Rain

  • Thursday

    Thursday: Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and noon, then a chance of rain and thunderstorms after noon. 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 56. Chance of precipitation is 50%.

    Low: 56 °F

    Chance Rain
    then Chance
    T-storms

  • Friday

    Friday: A chance of rain and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 50%.

    High: 81 °F

    Chance
    T-storms then
    Chance Rain

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Chance
    T-storms then
    Rain Likely

Detailed Forecast

Tonight
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 3am. Patchy fog between 10pm and 11pm. Low around 39. East wind around 5 mph. Chance of precipitation is 90%.
Tuesday
Rain and thunderstorms, mainly before 1pm, then rain likely and possibly a thunderstorm after 3pm. High near 61. East wind 3 to 5 mph. Chance of precipitation is 90%.
Tuesday Night
Rain likely, then rain and possibly a thunderstorm after midnight. Patchy fog between 11pm and 4am. Low around 50. Northeast wind around 6 mph. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. High near 67. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 90%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 55. South wind 3 to 6 mph. Chance of precipitation is 90%.
Thursday
Rain likely and possibly a thunderstorm before 9am, then rain likely between 9am and noon, then a chance of rain and thunderstorms after noon. 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 56. Chance of precipitation is 50%.
Friday
A chance of rain and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm before noon, then a chance of rain and thunderstorms after noon. Cloudy, with a high near 70. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 48.
Sunday
A 20 percent chance of rain. Partly sunny, 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. Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Ballwin MO
 38.58°N 90.55°W (Elev. 584 ft)
Last Update:
4:56 pm CST Mar 2, 2026
Forecast Valid:
7pm CST Mar 2, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
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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