Ballwin, MO Weather Forecast
Local 7-day forecast
Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Ballwin, MO in one place.
Clear, with a low around 54. South wind around 5 mph.
Local Weather Overview
This forecast page for Ballwin, MO is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 9, 2026 4:50 AM CDT.
The active forecast window currently covers Oct 9 to Oct 15, 2026 for Ballwin, MO.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 9 to Oct 15, 2026
- Latest sync
- Oct 9, 2026 4:50 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Ballwin
Columbus Day looks like the warmest upcoming period in Ballwin at 92 degrees F.
Overnight is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Columbus Day at about 5 to 9 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 9, 2026 4:50 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny, with a high near 90. South wind around 7 mph.
Mostly clear, with a low around 60. Southeast wind around 6 mph.
Mostly cloudy, with a high near 81. Southeast wind around 6 mph.
Mostly cloudy, with a low around 58. East wind around 5 mph.
Sunny, with a high near 82.
Mostly clear, with a low around 61.
Sunny, with a high near 92.
Mostly clear, with a low around 68.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Mostly clear, with a low around 64. Chance of precipitation is 20%.
A chance of rain showers. Mostly sunny, with a high near 83. Chance of precipitation is 50%.
A chance of rain showers before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 50%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 50%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 9
|
Clear
|
54°F |
5 mph
S
|
|
Friday
Oct 9
|
Sunny
|
90°F |
7 mph
S
|
|
Friday Night
Oct 9
|
Mostly Clear
|
60°F |
6 mph
SE
|
|
Saturday
Oct 10
|
Mostly Cloudy
|
81°F |
6 mph
SE
|
|
Saturday Night
Oct 10
|
Mostly Cloudy
|
58°F |
5 mph
E
|
|
Sunday
Oct 11
|
Sunny
|
82°F |
3 mph
NW
|
|
Sunday Night
Oct 11
|
Mostly Clear
|
61°F |
0 to 5 mph
S
|
|
Columbus Day
Oct 12
|
Sunny
|
92°F |
5 to 9 mph
SW
|
|
Monday Night
Oct 12
|
Mostly Clear
|
68°F |
7 mph
SW
|
|
Tuesday
Oct 13
|
Sunny then Slight Chance Showers And Thunderstorms
|
89°F |
7 mph
W
|
|
Tuesday Night
Oct 13
|
Slight Chance Showers And Thunderstorms
|
64°F |
6 mph
NE
|
|
Wednesday
Oct 14
|
Chance Rain Showers
|
83°F |
7 mph
SE
|
|
Wednesday Night
Oct 14
|
Chance Showers And Thunderstorms
|
65°F |
8 mph
S
|
|
Thursday
Oct 15
|
Chance Rain Showers
|
81°F |
9 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Ballwin.
