| National Weather Service Forecast for:
Bay St. Louis MS Issued by: National Weather Service New Orleans/Baton Rouge, LA |
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| Updated: 8:27 am CST Dec 21, 2025 | ||||||||||||||||||
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| Today |
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 68. Southeast wind 5 to 10 mph. |
| Tonight |
A 40 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 60. East wind around 5 mph. |
| Monday |
Mostly sunny, with a high near 66. East wind 10 to 15 mph. |
| Monday Night |
Mostly clear, with a low around 58. East wind 5 to 10 mph. |
| Tuesday |
Sunny, with a high near 68. Southeast wind 5 to 10 mph. |
| Tuesday Night |
Partly cloudy, with a low around 58. East wind around 5 mph becoming calm in the evening. |
| Wednesday |
Partly sunny, with a high near 68. Light and variable wind becoming southeast 5 to 10 mph in the morning. |
| Wednesday Night |
Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming calm in the evening. |
| Christmas Day |
Partly sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the morning. |
| Thursday Night |
Mostly cloudy, with a low around 58. Southeast wind around 5 mph becoming southwest after midnight. |
| Friday |
Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph. |
| Friday Night |
Mostly clear, with a low around 59. Southwest wind 5 to 10 mph. |
| Saturday |
Mostly sunny, with a high near 70. South wind 5 to 10 mph. |
Forecast from NOAA-NWS for Bay St. Louis MS.
