Weather for St Charles, Missouri
Current Weather
Five Day Weather Forecast
Tue
H: 83°F
L: 59°F
Wed
H: 97°F
L: 63°F
Thu
H: 75°F
L: 64°F
Fri
H: 80°F
L: 60°F
Sat
H: 85°F
L: 62°F
Air Quality
Nitrogen Dioxide: 21.5 μg/m3
Sulphur Dioxide: 2.9 μg/m3
Ozone: 50 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:29 PM
Daylight: 14 hrs 53 mins
Moon Transit: 2:49 PM
Moonset: 10:33 PM
Moon Phase: New
Moon Illumination: 1.0%
Best Times for Fishing or Hunting
Major Periods
1:43 AM - 4:13 AM2:19 PM - 4:49 PM
Minor Periods
10:03 PM - 11:33 PM6:27 AM - 7:57 AM
Action Rating: 3 out of 5
Flood Warning issued June 14 at 8:14PM CDT until June 20 at 7:00AM CDT by NWS St Louis MO
Effective: Sun June 14, 2026, 8:14 PM
Expires: Tue June 16, 2026, 8:15 AM
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Chester. Mississippi River at Saverton. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Winfield. * WHEN...From Monday evening to Saturday morning. * IMPACTS...At 27.5 feet, At this stage, Lock and Dam 25 will stockpile 200 tons of sand, 12,000 sandbags, and 10,000 square feet of polyethylene plastic as a precaution. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 25.5 feet. - Forecast...The river is expected to rise above flood stage tomorrow evening to a crest of 26.8 feet early Wednesday afternoon. It will then fall below flood stage early Friday morning. - Flood stage is 26.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued June 15 at 1:33PM CDT until June 19 at 7:00AM CDT by NWS St Louis MO
Effective: Mon June 15, 2026, 1:33 PM
Expires: Wed June 17, 2026, 1:45 AM
...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Winfield. * WHEN...From Tuesday evening to Friday morning. * IMPACTS...At 27.5 feet, At this stage, Lock and Dam 25 will stockpile 200 tons of sand, 12,000 sandbags, and 10,000 square feet of polyethylene plastic as a precaution. * ADDITIONAL DETAILS... - At 1:00 PM CDT Monday the stage was 25.7 feet. - Forecast...The river is expected to rise above flood stage tomorrow evening to a crest of 26.1 feet Wednesday morning. It will then fall below flood stage early Thursday morning. - Flood stage is 26.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued June 15 at 10:06PM CDT until June 19 at 7:00AM CDT by NWS St Louis MO
Effective: Mon June 15, 2026, 10:06 PM
Expires: Wed June 17, 2026, 10:15 AM
...The Flood Warning is extended for the following rivers in Missouri...Illinois... Mississippi River at Chester. ...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Winfield. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Winfield. * WHEN...From Tuesday evening to Friday morning. * IMPACTS...At 23.0 feet, A few local islands begin to flood. * ADDITIONAL DETAILS... - At 9:30 PM CDT Monday the stage was 25.7 feet. - Forecast...The river is expected to rise above flood stage Tuesday evening to a crest of 26.1 feet Wednesday morning. It will then fall below flood stage early Thursday morning. - Flood stage is 26.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued June 14 at 8:10PM CDT by NWS St Louis MO
Effective: Sun June 14, 2026, 8:10 PM
Expires: Tue June 16, 2026, 8:15 AM
...The Flood Warning is extended for the following rivers in Illinois... Illinois River at Hardin. Illinois River at Valley City. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Illinois River at Hardin. * WHEN...From Monday afternoon until further notice. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land begins. * ADDITIONAL DETAILS... - At 8:00 PM CDT Sunday the stage was 24.6 feet. - Forecast...The river is expected to rise above flood stage early tomorrow afternoon and continue rising to a crest of 26.2 feet Thursday evening. - Flood stage is 25.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued June 15 at 12:09PM CDT until June 23 at 1:00AM CDT by NWS St Louis MO
Effective: Mon June 15, 2026, 12:09 PM
Expires: Wed June 17, 2026, 12:15 AM
...The Flood Warning continues for the following rivers 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 forecast. * WHERE...Illinois River at Hardin. * WHEN...From late tonight to Tuesday, June 23. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land begins. * ADDITIONAL DETAILS... - At 11:30 AM CDT Monday the stage was 24.7 feet. - Forecast...The river is expected to rise above flood stage just after midnight tonight to a crest of 25.7 feet early Friday morning. It will then fall below flood stage Sunday evening. - Flood stage is 25.0 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Weather Forecast
Air Quality
Nitrogen Dioxide: 9.24 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 81.08 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:29 PM
Daylight: 14 hrs 53 mins
Moon Transit: 2:49 PM
Moonset: 10:33 PM
Moon Phase: New
Moon Illumination: 1.0%
Best Times for Fishing or Hunting
Major Periods
1:43 AM - 4:13 AM2:19 PM - 4:49 PM
Minor Periods
10:03 PM - 11:33 PM6:27 AM - 7:57 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 15.56 μg/m3
Sulphur Dioxide: 2.23 μg/m3
Ozone: 67.25 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:30 PM
Daylight: 14 hrs 53 mins
Moon Transit: 3:50 PM
Moonset: 11:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%
Best Times for Fishing or Hunting
Major Periods
2:46 AM - 5:16 AM3:20 PM - 5:50 PM
Minor Periods
12:00 AM - 12:00 AM7:45 AM - 9:15 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.68 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 71.29 μg/m3
Astronomical
Sun Transit: 1:03 PM
Sunset: 8:30 PM
Daylight: 14 hrs 54 mins
Moon Transit: 4:44 PM
Moonset: 12:13 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%
Best Times for Fishing or Hunting
Major Periods
3:44 AM - 6:14 AM4:14 PM - 6:44 PM
Minor Periods
9:02 AM - 10:32 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.44 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 67.33 μg/m3
Astronomical
Sun Transit: 1:03 PM
Sunset: 8:30 PM
Daylight: 14 hrs 54 mins
Moon Transit: 5:34 PM
Moonset: 12:45 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%
Best Times for Fishing or Hunting
Major Periods
4:36 AM - 7:06 AM5:04 PM - 7:34 PM
Minor Periods
10:15 AM - 11:45 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 23.7 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 31.25 μg/m3
Astronomical
Sun Transit: 1:03 PM
Sunset: 8:30 PM
Daylight: 14 hrs 54 mins
Moon Transit: 6:19 PM
Moonset: 12:12 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%
Best Times for Fishing or Hunting
Major Periods
5:23 AM - 7:53 AM5:49 PM - 8:19 PM
Minor Periods
11:23 AM - 12:53 AM12:00 AM - 12:00 AM
Action Rating: 4 out of 5