Weather for Bay St. Louis, Mississippi
Current Weather
Five Day Weather Forecast
Sun
H: 91°F
L: 80°F
Mon
H: 89°F
L: 76°F
Tue
H: 91°F
L: 74°F
Wed
H: 87°F
L: 74°F
Thu
H: 88°F
L: 77°F
Air Quality
Nitrogen Dioxide: 2.3 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 35 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:03 PM
Daylight: 14 hrs 5 mins
Moon Transit: 12:00 AM
Moonset: 4:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:33 AM - 2:03 PM
Minor Periods
6:56 PM - 8:26 PM4:00 AM - 5:30 AM
Action Rating: 4 out of 5
Flood Warning issued June 27 at 7:42PM CDT until July 6 at 1:00AM CDT by NWS New Orleans LA
Effective: Sat June 27, 2026, 7:42 PM
Expires: Sun June 28, 2026, 1:45 PM
...The Flood Warning continues for the following rivers in Mississippi...Louisiana... Pearl River Near Bogalusa affecting Washington and Pearl River Counties. Pearl River Near Pearl River affecting St. Tammany, Pearl River and Hancock Counties. Pascagoula River At Graham Ferry affecting Jackson County. For the Lower Pearl River...including Bogalusa, Pearl River...Minor flooding is forecast. For the Pascagoula River...including Graham Ferry...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Pearl River near Pearl River. * WHEN...Until Monday, July 06. * IMPACTS...At 15.5 feet, Secondary roads to the river and throughout Honey Island Swamp are inundated. Property in the vicinity of the gage is flooded threatening about 20 homes along the left bank. The Bogue Chitto National Wildlife Refuge will be closed to hunting at the 15.5 foot stage. * ADDITIONAL DETAILS... - At 7:00 PM CDT Saturday the stage was 15.2 feet. - Bankfull stage is 12.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:00 PM CDT Saturday was 15.2 feet. - Forecast...The river is expected to rise to a crest of 15.2 feet just after midnight tonight. It will then fall below flood stage Sunday, July 05. - Flood stage is 14.0 feet. - Flood History...This crest compares to a previous crest of 15.2 feet on 04/05/1945. - http://www.weather.gov/safety/flood
Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Additional information is available at www.weather.gov/lix. Click on the Rivers and Lakes menu for forecasts and observations. The next statement will be issued when updates are needed.
Flood Warning issued June 27 at 7:42PM CDT until July 5 at 7:00AM CDT by NWS New Orleans LA
Effective: Sat June 27, 2026, 7:42 PM
Expires: Sun June 28, 2026, 1:45 PM
...The Flood Warning continues for the following rivers in Mississippi...Louisiana... Pearl River Near Bogalusa affecting Washington and Pearl River Counties. Pearl River Near Pearl River affecting St. Tammany, Pearl River and Hancock Counties. Pascagoula River At Graham Ferry affecting Jackson County. For the Lower Pearl River...including Bogalusa, Pearl River...Minor flooding is forecast. For the Pascagoula River...including Graham Ferry...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Pearl River near Bogalusa. * WHEN...Until Sunday, July 05. * IMPACTS...At 20.0 feet, Woodlands and crop acreage along the river will be flooded. The Bogue Chitto Wildlife Management area will be inundated with water in recreational camps and over access roads. * ADDITIONAL DETAILS... - At 7:15 PM CDT Saturday the stage was 20.1 feet. - Bankfull stage is 15.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:15 PM CDT Saturday was 20.1 feet. - Forecast...The river is expected to rise to a crest of 20.2 feet tomorrow evening. It will then fall below flood stage Sunday, July 05. - Flood stage is 18.0 feet. - Flood History...This crest compares to a previous crest of 20.2 feet on 03/23/1943. - http://www.weather.gov/safety/flood
Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Additional information is available at www.weather.gov/lix. Click on the Rivers and Lakes menu for forecasts and observations. The next statement will be issued when updates are needed.
Flood Warning issued June 27 at 7:42PM CDT until June 29 at 1:00PM CDT by NWS New Orleans LA
Effective: Sat June 27, 2026, 7:42 PM
Expires: Sun June 28, 2026, 1:45 PM
...The Flood Warning continues for the following rivers in Mississippi...Louisiana... Pearl River Near Bogalusa affecting Washington and Pearl River Counties. Pearl River Near Pearl River affecting St. Tammany, Pearl River and Hancock Counties. Pascagoula River At Graham Ferry affecting Jackson County. For the Lower Pearl River...including Bogalusa, Pearl River...Minor flooding is forecast. For the Pascagoula River...including Graham Ferry...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Pascagoula River at Graham Ferry. * WHEN...Until Monday afternoon. * IMPACTS...At 16.0 feet, River property at Cumbest Bluff will be cut off by high water and some river roads will be impassable. * ADDITIONAL DETAILS... - At 6:45 PM CDT Saturday the stage was 16.4 feet. - Bankfull stage is 15.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 6:45 PM CDT Saturday was 16.4 feet. - Forecast...The river is expected to fall below flood stage Monday morning and continue falling to 14.1 feet Thursday evening. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 16.4 feet on 02/12/2010. - http://www.weather.gov/safety/flood
Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Additional information is available at www.weather.gov/lix. Click on the Rivers and Lakes menu for forecasts and observations. The next statement will be issued when updates are needed.
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.26 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 56.46 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:03 PM
Daylight: 14 hrs 5 mins
Moon Transit: 12:00 AM
Moonset: 4:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:33 AM - 2:03 PM
Minor Periods
6:56 PM - 8:26 PM4:00 AM - 5:30 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.88 μg/m3
Sulphur Dioxide: 0.86 μg/m3
Ozone: 56.5 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 8:03 PM
Daylight: 14 hrs 5 mins
Moon Transit: 12:23 AM
Moonset: 5:21 AM
Moon Phase: Full
Moon Illumination: 100.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:25 AM - 2:55 PM
Minor Periods
7:45 PM - 9:15 PM4:51 AM - 6:21 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.54 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 72.29 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:03 PM
Daylight: 14 hrs 5 mins
Moon Transit: 1:14 AM
Moonset: 6:17 AM
Moon Phase: Full
Moon Illumination: 98.6%
Best Times for Fishing or Hunting
Major Periods
12:44 AM - 3:14 AM1:15 PM - 3:45 PM
Minor Periods
8:29 PM - 9:59 PM5:47 AM - 7:17 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.08 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 90.33 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:03 PM
Daylight: 14 hrs 4 mins
Moon Transit: 2:04 AM
Moonset: 7:14 AM
Moon Phase: Full
Moon Illumination: 94.7%
Best Times for Fishing or Hunting
Major Periods
1:34 AM - 4:04 AM2:04 PM - 4:34 PM
Minor Periods
9:07 PM - 10:37 PM6:44 AM - 8:14 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.73 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 62.75 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:03 PM
Daylight: 14 hrs 4 mins
Moon Transit: 2:52 AM
Moonset: 8:13 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.5%
Best Times for Fishing or Hunting
Major Periods
2:22 AM - 4:52 AM2:50 PM - 5:20 PM
Minor Periods
9:41 PM - 11:11 PM7:43 AM - 9:13 AM
Action Rating: 2 out of 5