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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 30.31°N 89.34°W (Text-Only)
NWS Forecast for: Bay St. Louis MS
Issued by: National Weather Service New Orleans/Baton Rouge, LA
Last Update: 2:01 am CDT Jun 30, 2026		Print

  • Overnight

    Overnight: Clear, with a low around 79. West wind around 5 mph.

    Low: 79 °F

    Clear


  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 92. Heat index values as high as 105. Northwest wind around 5 mph becoming calm.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 79. North wind around 5 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms after 5pm. Sunny, with a high near 89. North wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 80. Southeast wind around 5 mph becoming calm in the evening.

    Low: 80 °F

    Partly Cloudy


  • Thursday

    Thursday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Sunny, with a high near 89. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 79. South wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Mostly Clear


  • Friday

    Friday: Sunny, with a high near 90. North wind around 5 mph becoming south in the afternoon.

    High: 90 °F

    Sunny


  • Friday
    Night

    Friday Night: Mostly clear, with a low around 80. South wind around 5 mph becoming west after midnight.

    Low: 80 °F

    Mostly Clear




    • Overnight: Clear, with a low around 79. West wind around 5 mph.

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 92. Heat index values as high as 105. Northwest wind around 5 mph becoming calm.

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 79. North wind around 5 mph. Chance of precipitation is 30%.

    Wednesday: A chance of showers and thunderstorms before 3pm, then a chance of showers and thunderstorms after 5pm. Sunny, with a high near 89. North wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 30%.

    Wednesday Night: Partly cloudy, with a low around 80. Southeast wind around 5 mph becoming calm in the evening.

    Thursday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Sunny, with a high near 89. Northeast wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 20%.

    Thursday Night: Mostly clear, with a low around 79. South wind around 5 mph becoming calm in the evening.

    Friday: Sunny, with a high near 90. North wind around 5 mph becoming south in the afternoon.

    Friday Night: Mostly clear, with a low around 80. South wind around 5 mph becoming west after midnight.

    Independence Day: A chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    Saturday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 79. South wind around 5 mph becoming west after midnight.

    Sunday: A chance of showers and thunderstorms. Mostly sunny, with a high near 89. West wind 5 to 10 mph becoming south in the afternoon.

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 80. Southwest wind 5 to 10 mph.

    Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 88. West wind 5 to 10 mph becoming south in the afternoon.


    Bay St. Louis MS
     30.31°N 89.34°W

    Visit your local NWS office at: https://www.weather.gov/lix