Ballwin, MO Weather Forecast
St. Louis County, Missouri
Live radar, warnings and storm tracking for Ballwin, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Ballwin
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Ballwin, MO at a glance
Ballwin is home to about 30,410 people in St. Louis County, across 9 square miles. It ranks 21st by population of 211 places in Missouri with a forecast here. The nearest neighbour with its own forecast is Ellisville, 2 miles away.
- County
- St. Louis County
- Population
- 30,410 2023 est.
- Land area
- 9 sq mi
- People per sq mi
- 3,386
- Forecast point
- 38.5951°N, 90.5500°W
How well can the network see Ballwin?
The nearest Doppler radar is KLSX (St. Louis, MO), to the NW. Its lowest scan passes about 520 ft above Ballwin. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Ballwin show up clearly. Ballwin is closer to its radar than 95% of US cities.
The closest weather station is KSUS (St Louis/Spirit of St Louis Arpt). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Ballwin
- Ellisville, MO2 mi
- Manchester, MO2 mi
- Clarkson Valley, MO3 mi
- Valley Park, MO4 mi
- Chesterfield, MO5 mi
- Town and Country, MO5 mi
- Des Peres, MO6 mi
- Wildwood, MO6 mi
Elsewhere in Missouri
Kansas CitySt. LouisSpringfieldColumbiaIndependenceLee's SummitAll Missouri forecasts →