National Weather Service Forecast for: Ballwin MO
Issued by: National Weather Service Saint Louis, MO
Updated: 11:06 am CDT Jul 4, 2025
 
Independence
Day
Independence Day: Mostly sunny, with a high near 94. South wind around 8 mph.
Mostly Sunny

Tonight

Tonight: Patchy smoke between 10pm and 2am. Mostly clear, with a low around 70. South wind around 6 mph becoming calm  in the evening.
Patchy Smoke

Saturday

Saturday: Sunny, with a high near 94. Southwest wind 3 to 7 mph.
Sunny

Saturday
Night
Saturday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 74. Southwest wind 3 to 6 mph.
Partly Cloudy
then Slight
Chance
T-storms
Sunday

Sunday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 89. West wind 5 to 7 mph.
Chance
T-storms

Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 71.
Chance
T-storms

Monday

Monday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 90.
Chance
T-storms

Monday
Night
Monday Night: Mostly clear, with a low around 71.
Mostly Clear

Tuesday

Tuesday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 91.
Sunny then
Chance
T-storms
Hi 94 °F Lo 70 °F Hi 94 °F Lo 74 °F Hi 89 °F Lo 71 °F Hi 90 °F Lo 71 °F Hi 91 °F

 

Independence Day
 
Mostly sunny, with a high near 94. South wind around 8 mph.
Tonight
 
Patchy smoke between 10pm and 2am. Mostly clear, with a low around 70. South wind around 6 mph becoming calm in the evening.
Saturday
 
Sunny, with a high near 94. Southwest wind 3 to 7 mph.
Saturday Night
 
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Southwest wind 3 to 6 mph.
Sunday
 
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89. West wind 5 to 7 mph.
Sunday Night
 
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 71.
Monday
 
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Monday Night
 
Mostly clear, with a low around 71.
Tuesday
 
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91.
Tuesday Night
 
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Wednesday
 
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89.
Wednesday Night
 
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Thursday
 
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Ballwin MO.