Weather for St Charles, Missouri
Current Weather
Five Day Weather Forecast
Sun
H: 70°F
L: 40°F
Mon
H: 71°F
L: 45°F
Tue
H: 78°F
L: 56°F
Wed
H: 78°F
L: 59°F
Thu
H: 80°F
L: 61°F
Air Quality
Nitrogen Dioxide: 10.55 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 68 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:43 PM
Daylight: 13 hrs 23 mins
Moon Transit: 3:06 PM
Moonset: 11:01 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%
Best Times for Fishing or Hunting
Major Periods
2:01 AM - 4:31 AM2:36 PM - 5:06 PM
Minor Periods
12:00 AM - 12:00 AM6:52 AM - 8:22 AM
Action Rating: 2 out of 5
Flood Warning issued April 19 at 11:38AM CDT by NWS St Louis MO
Effective: Sun April 19, 2026, 11:38 AM
Expires: Mon April 20, 2026, 11:45 PM
...The National Weather Service in St Louis has issued a Flood Warning for the following rivers in Missouri...Illinois... Mississippi River at Grafton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Grafton. * WHEN...From this evening until further notice. * IMPACTS...At 21.0 feet, Water begins flooding the floor at the Palisades Marina in Portage Des Sioux. Access to homes along North Shore Drive in eastern St. Charles County becomes cut off near this height. * ADDITIONAL DETAILS... - At 11:00 AM CDT Sunday the stage was 19.8 feet. - Forecast...The river is expected to rise above flood stage this evening and continue rising to a crest of 21.1 feet Tuesday evening. - Flood stage is 20.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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
Flood Warning issued April 18 at 8:53PM CDT by NWS St Louis MO
Effective: Sat April 18, 2026, 8:53 PM
Expires: Mon April 20, 2026, 9:00 AM
...The Flood Warning is extended for the following river in Illinois... Illinois River at Hardin. 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...Illinois River at Hardin. * WHEN...From this evening until further notice. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land begins. * ADDITIONAL DETAILS... - At 8:30 PM CDT Saturday the stage was 25.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Saturday was 25.1 feet. - Forecast...The river is expected to rise to a crest of 26.8 feet early Wednesday afternoon. - Flood stage is 25.0 feet.
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
Flood Warning issued April 19 at 11:22AM CDT by NWS St Louis MO
Effective: Sun April 19, 2026, 11:22 AM
Expires: Mon April 20, 2026, 11:30 PM
...The Flood Warning continues for the following rivers in Illinois... Illinois River at Hardin. ...The Flood Warning is cancelled for the following rivers in Missouri... Moreau River near Jefferson City. 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...Illinois River at Hardin. * WHEN...Until further notice. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land begins. * ADDITIONAL DETAILS... - At 11:00 AM CDT Sunday the stage was 25.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:00 AM CDT Sunday was 25.5 feet. - Forecast...The river is expected to rise to a crest of 26.9 feet early Wednesday morning. - Flood stage is 25.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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
Flood Warning issued April 18 at 8:47PM CDT by NWS St Louis MO
Effective: Sat April 18, 2026, 8:47 PM
Expires: Mon April 20, 2026, 9:00 AM
...The Flood Warning continues for the following river in Missouri... Illinois... Mississippi River at Lock & Dam 21. Mississippi River at Canton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. 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...Mississippi River at Clarksville. * WHEN...Until further notice. * IMPACTS...At 29.0 feet, Water enters the parking lot entrance at the Clarksville Riverfront Park. * ADDITIONAL DETAILS... - At 8:30 PM CDT Saturday the stage was 27.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Saturday was 27.3 feet. - Forecast...The river is expected to rise to a crest of 28.8 feet tomorrow evening. - Flood stage is 25.0 feet.
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
Flood Warning issued April 18 at 8:47PM CDT by NWS St Louis MO
Effective: Sat April 18, 2026, 8:47 PM
Expires: Mon April 20, 2026, 9:00 AM
...The Flood Warning continues for the following river in Missouri... Illinois... Mississippi River at Lock & Dam 21. Mississippi River at Canton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. 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...Mississippi River at Winfield. * WHEN...Until further notice. * IMPACTS...At 29.0 feet, Route 96 at Mozier Landing closes. * ADDITIONAL DETAILS... - At 8:30 PM CDT Saturday the stage was 26.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Saturday was 26.8 feet. - Forecast...The river is expected to rise to a crest of 29.0 feet Monday evening. - Flood stage is 26.0 feet.
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
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.1 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 82.16 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:43 PM
Daylight: 13 hrs 23 mins
Moon Transit: 3:06 PM
Moonset: 11:01 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%
Best Times for Fishing or Hunting
Major Periods
2:01 AM - 4:31 AM2:36 PM - 5:06 PM
Minor Periods
12:00 AM - 12:00 AM6:52 AM - 8:22 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.4 μg/m3
Sulphur Dioxide: 2.93 μg/m3
Ozone: 86.16 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:44 PM
Daylight: 13 hrs 25 mins
Moon Transit: 4:11 PM
Moonset: 12:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%
Best Times for Fishing or Hunting
Major Periods
3:04 AM - 5:34 AM3:41 PM - 6:11 PM
Minor Periods
7:43 AM - 9:13 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.08 μg/m3
Sulphur Dioxide: 3.28 μg/m3
Ozone: 98.84 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:45 PM
Daylight: 13 hrs 27 mins
Moon Transit: 5:16 PM
Moonset: 12:13 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%
Best Times for Fishing or Hunting
Major Periods
4:09 AM - 6:39 AM4:46 PM - 7:16 PM
Minor Periods
8:44 AM - 10:14 AM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 2.44 μg/m3
Ozone: 92.88 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:46 PM
Daylight: 13 hrs 30 mins
Moon Transit: 6:18 PM
Moonset: 1:15 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
5:13 AM - 7:43 AM5:48 PM - 8:18 PM
Minor Periods
9:54 AM - 11:24 AM12:45 AM - 2:15 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.8 μg/m3
Sulphur Dioxide: 2.76 μg/m3
Ozone: 71.38 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:47 PM
Daylight: 13 hrs 32 mins
Moon Transit: 7:16 PM
Moonset: 2:05 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Best Times for Fishing or Hunting
Major Periods
6:14 AM - 8:44 AM6:46 PM - 9:16 PM
Minor Periods
11:07 AM - 12:37 AM1:35 AM - 3:05 AM
Action Rating: 3 out of 5