St. Charles, Missouri Weather:
Active Weather Warnings
Thursday, June 11, 2026
Sunny with a Chance of Thunderstorms
Day 97°
Night 66°
Precipitation 55 %
Wind 13 mph
UV Index (0 - 11+) 11

Weather Alerts and Warnings for

Severe Immediate Observed

Flood Warning

Flood Warning issued June 9 at 8:47PM CDT until June 12 at 1:00AM CDT by NWS St Louis MO
Jun 9, 8:47 PM Jun 12, 1:00 AM
...The Flood Warning is extended for the following river in
Missouri...

Missouri River at St. Charles.

Missouri River at Washington.

...The Flood Warning continues for the following rivers in
Missouri...

Osage River near Mari-Osa Campground.

Missouri River at Hermann.

Missouri River near Chamois.

River forecasts are based on observed precipitation and forecast
precipitation for the next 24 hours.

WHAT: Minor flooding is occurring and minor flooding is forecast.

WHERE: Missouri River at St. Charles.

WHEN: Until late Thursday night.

ADDITIONAL DETAILS:
- At 8:30 PM CDT Tuesday the stage was 27.2 feet.
- Forecast...The river is expected to fall below flood stage
Wednesday evening.
- Flood stage is 25.0 feet.
+ Read More
Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Updated: Jun 9, 9:08 PM Source: NWS Alert