St. Charles, MO Weather Forecast
St. Charles County, Missouri
Live radar, warnings and storm tracking for St. Charles, 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 St. Charles
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
St. Charles, MO at a glance
St. Charles is home to about 71,800 people in St. Charles County, across 25 square miles. It ranks 8th by population of 211 places in Missouri with a forecast here. The nearest neighbour with its own forecast is St. Peters, 5 miles away.
- County
- St. Charles County
- Population
- 71,800 2023 est.
- Land area
- 25 sq mi
- People per sq mi
- 2,849
- Forecast point
- 38.7957°N, 90.5154°W
How well can the network see St. Charles?
The nearest Doppler radar is KLSX (St. Louis, MO), to the SW. Its lowest scan passes about 580 ft above St. Charles. That is about as close as US radar coverage gets: low-level rotation and gust fronts over St. Charles show up clearly. St. Charles is closer to its radar than 94% of US cities.
The closest weather station is KSTL (St Louis/Lambert Intl). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near St. Charles
- St. Peters, MO5 mi
- Bridgeton, MO6 mi
- Maryland Heights, MO6 mi
- Hazelwood, MO6 mi
- Cottleville, MO8 mi
- St. Ann, MO8 mi
- Weldon Spring, MO9 mi
- Woodson Terrace, MO10 mi
Elsewhere in Missouri
Kansas CitySt. LouisSpringfieldColumbiaIndependenceLee's SummitAll Missouri forecasts →