Bay Saint Louis, MS Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Jun 30 		Light Rain Early -º / 76º 84% NNE 2 mph 84%
Wed
Jul 1 		Partly Cloudy
View Hourly 		89º / 77º 24% E 11 mph 73%
12am Mostly Clear 85º 2% N 0 mph 72%
1am Clear 84º 2% ENE 0 mph 74%
2am Clear 83º 3% NE 0 mph 76%
3am Mostly Clear 79º 3% NE 2 mph 87%
4am Mostly Clear 79º 4% N 3 mph 87%
5am Partly Cloudy 79º 5% N 2 mph 87%
6am Partly Cloudy 78º 11% NNE 3 mph 89%
7am Partly Cloudy 79º 24% NNE 2 mph 90%
8am Partly Cloudy 81º 16% NE 4 mph 84%
9am Mostly Sunny 84º 17% ENE 5 mph 76%
10am Mostly Sunny 86º 14% E 6 mph 72%
11am Partly Cloudy 88º 18% E 8 mph 68%
12pm Isolated Thunderstorms 88º 33% ESE 9 mph 69%
1pm Isolated Thunderstorms 88º 34% ESE 10 mph 70%
2pm Partly Cloudy 88º 15% ESE 10 mph 69%
3pm Partly Cloudy 88º 15% ESE 11 mph 69%
4pm Partly Cloudy 87º 15% SE 11 mph 69%
5pm Partly Cloudy 87º 15% SE 9 mph 69%
6pm Mostly Sunny 87º 5% SE 9 mph 71%
7pm Partly Cloudy 86º 5% ESE 6 mph 72%
8pm Partly Cloudy 84º 8% ESE 5 mph 74%
9pm Partly Cloudy 83º 4% ESE 3 mph 77%
10pm Mostly Clear 82º 4% E 3 mph 79%
11pm Mostly Clear 82º 5% E 3 mph 81%
Thu
Jul 2 		Partly Cloudy
View Hourly 		89º / 76º 24% ESE 9 mph 72%
12am Mostly Clear 81º 5% E 2 mph 83%
1am Mostly Clear 81º 5% E 3 mph 84%
2am Mostly Clear 80º 5% E 2 mph 84%
3am Partly Cloudy 80º 6% E 2 mph 85%
4am Mostly Clear 79º 12% E 2 mph 87%
5am Partly Cloudy 79º 19% ENE 2 mph 87%
6am Partly Cloudy 78º 21% ENE 3 mph 89%
7am Mostly Cloudy 79º 24% ENE 3 mph 88%
8am Partly Cloudy 82º 22% ENE 5 mph 84%
9am Partly Cloudy 84º 13% E 6 mph 78%
10am Partly Cloudy 86º 24% E 7 mph 74%
11am Partly Cloudy 86º 15% ESE 8 mph 71%
12pm Partly Cloudy 87º 15% ESE 9 mph 70%
1pm Partly Cloudy 87º 15% ESE 9 mph 69%
2pm Partly Cloudy 88º 15% SE 9 mph 67%
3pm Partly Cloudy 88º 15% SE 9 mph 67%
4pm Partly Cloudy 87º 15% SE 9 mph 64%
5pm Partly Cloudy 87º 15% SE 8 mph 65%
6pm Mostly Sunny 87º 4% SE 7 mph 66%
7pm Sunny 86º 3% SE 5 mph 69%
8pm Sunny 85º 4% SE 4 mph 73%
9pm Clear 84º 6% SE 3 mph 74%
10pm Mostly Clear 83º 4% ESE 3 mph 77%
11pm Mostly Clear 82º 10% ESE 2 mph 78%
Fri
Jul 3 		Partly Cloudy 91º / 77º 17% E 7 mph 66%
Sat
Jul 4 		PM Thunderstorms 91º / 77º 35% S 6 mph 67%
Sun
Jul 5 		PM Thunderstorms 89º / 77º 52% SW 6 mph 71%
Mon
Jul 6 		Scattered Thunderstorms 88º / 77º 49% SW 7 mph 73%
Tue
Jul 7 		Scattered Thunderstorms 89º / 78º 40% WSW 8 mph 72%

Weather Radar for Bay Saint Louis, MS See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Bay Saint Louis, MS

Tonight
Low : 79ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Wednesday
High : 90ºF
N wind 5 to 10 kt becoming SE in the afternoon. A chance of showers and thunderstorms, mainly between 3pm and 4pm. Seas 1 ft or less.
Wednesday Night
Low : 79ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Thursday
High : 90ºF
NE wind 5 to 10 kt becoming SE in the afternoon. A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Seas 1 ft or less.
Thursday Night
Low : 78ºF
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Friday
High : 91ºF
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Friday Night
Low : 78ºF
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Independence Day
High : 91ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Saturday Night
Low : 78ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms after 1am. Seas 1 ft or less.

NOAA Buoy Data Near Bay Saint Louis, MS See Map

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    Wind Speed Forecast for Bay Saint Louis, MS

    WednesdayThursdayFriday
    Wind Speed (MPH) 0349115225994
    5am9am1pm5pm9pm1am5am9am1pm5pm9pm1am
    MPH 0349115225994
    DIR NNNEESESEESEEEENEESESESE

    Current Weather Conditions In Bay Saint Louis, MS

    As Of: 22 minutes ago

    • 85ºF
    • 93ºF
    • 0mph
    • 0º (N)
    • 0mph
    • Mostly Clear
    • 10mi
    • 30.01"
    • 72%
    • 0ºF

    The weather right now in Bay Saint Louis, MS is Mostly Clear. The current temperature is 85°F, and the expected high and low for today, Wednesday, July 1, 2026, are -° high temperature and 76°F low temperature. The wind is currently blowing at 0 miles per hour, and coming from the North. The wind is gusting to 0 mph. With the wind and the atmosphere the temperature feels like 93° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 72 percent, and air pressure at 30.01 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Heat Advisory - 1:05pm Tue Jun 30 2026

    ...HEAT ADVISORY IN EFFECT FROM 10 AM TO 6 PM CDT WEDNESDAY... ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING...

    WHAT: Heat index values up to 110 expected.

    WHERE: Southeast Louisiana and southern Mississippi.

    WHEN: For the first Heat Advisory, until 6 PM CDT this evening.
    For the second Heat Advisory, from 10 AM to 6 PM CDT Wednesday.

    IMPACTS: Hot temperatures and high humidity may cause heat
    illnesses.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Drink plenty of fluids, stay in an air-conditioned room, stay out of
    the sun, and check up on relatives and neighbors.

    Take extra precautions when outside. Wear lightweight and loose
    fitting clothing. Try to limit strenuous activities to early morning
    or evening. Take action when you see symptoms of heat exhaustion and
    heat stroke.

    &&