National Weather Service Forecast for: Bay St. Louis MS
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Updated: 6:16 pm CDT Jun 2, 2025
 
Tonight

Tonight: Clear, with a low around 76. Southeast wind around 5 mph.
Clear

 Tuesday

Tuesday: Sunny, with a high near 86. Southeast wind 10 to 15 mph.
Sunny

 Tuesday
Night
Tuesday Night: A slight chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 79. Southeast wind 10 to 15 mph. Chance of precipitation is 40%.
Chance
T-storms

 Wednesday

Wednesday: Showers and possibly a thunderstorm. High near 85. East wind around 10 mph. Chance of precipitation is 80%.
Showers

 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 78. East wind 5 to 10 mph. Chance of precipitation is 30%.
Chance
Showers

 Thursday

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 60%.
Showers
Likely

 Thursday
Night
Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 79. South wind 5 to 10 mph.
Slight Chance
T-storms

 Friday

Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Sunny, with a high near 88. South wind 5 to 10 mph. Chance of precipitation is 60%.
Chance
T-storms then
Showers
Likely
 Friday
Night
Friday Night: Partly cloudy, with a low around 80. Southwest wind 5 to 10 mph.
Partly Cloudy
Lo 76 °F Hi 86 °F Lo 79 °F Hi 85 °F Lo 78 °F Hi 86 °F Lo 79 °F Hi 88 °F Lo 80 °F

 

Tonight
 
 Clear, with a low around 76. Southeast wind around 5 mph.
Tuesday
 
 Sunny, with a high near 86. Southeast wind 10 to 15 mph.
Tuesday Night
 
 A slight chance of showers and thunderstorms before 1am, then a chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 79. Southeast wind 10 to 15 mph. Chance of precipitation is 40%.
Wednesday
 
 Showers and possibly a thunderstorm. High near 85. East wind around 10 mph. Chance of precipitation is 80%.
Wednesday Night
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 78. East wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 60%.
Thursday Night
 
 A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 79. South wind 5 to 10 mph.
Friday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Sunny, with a high near 88. South wind 5 to 10 mph. Chance of precipitation is 60%.
Friday Night
 
 Partly cloudy, with a low around 80. Southwest wind 5 to 10 mph.
Saturday
 
 A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. South wind 5 to 10 mph.
Saturday Night
 
 A slight chance of showers and thunderstorms. Partly cloudy, with a low around 80. South wind around 10 mph.
Sunday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 90. West wind 5 to 15 mph.
Sunday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Southwest wind 10 to 15 mph.
Monday
 
 Showers and thunderstorms likely. Partly sunny, with a high near 89. Southwest wind 5 to 10 mph.

 

Forecast from NOAA-NWS for Bay St. Louis MS.