Weather in Bay Saint Louis

14-day forecast · updated today, Wednesday, October 28, at 6:03 pm (CDT)

Now · mainly clear 70 °F

Feels like: 72 °F
Low / high: 58 / 79 °F
Rain: 0%
Wind: 5 mph SSE

→ 30.13 inHg · steady

Today in Bay Saint Louis: partly cloudy, 58 °F to 79 °F, with a 0% chance of rain and a light breeze from the south-southeast (5 mph). Tomorrow, overcast, 57 °F to 77 °F and a 1% chance of rain. The warmest day of the week is Wednesday 28, at 79 °F. Next likely rain: Saturday 31 (52%).

Temperatures for the next 14 days

79° 58°
Today
77° 57°
Thu 29
77° 62°
Fri 30
77° 66°
Sat 31
77° 66°
Sun 1
76° 64°
Mon 2
76° 66°
Tue 3
75° 61°
Wed 4
73° 57°
Thu 5
71° 53°
Fri 6
72° 52°
Sat 7
72° 53°
Sun 8
71° 51°
Mon 9
72° 54°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 28	Partly cloudy	58 / 79 °F	0%	9 mph ENE	0.9 ft	12:34 am	HRRR
Thu 29	Overcast	57 / 77 °F	1%	10 mph ENE	0.9 ft	1:19 am	HRRR + NBM
Fri 30	Overcast	62 / 77 °F	1%	13 mph ENE	1.2 ft	2:08 am	NBM
Sat 31	Light drizzle	66 / 77 °F	52% · 0.23 in	13 mph E	1.3 ft	3:02 am	NBM
Sun 1	Light drizzle	66 / 77 °F	47% · 0.24 in	12 mph ENE	2.0 ft	2:59 am	NBM
Mon 2	Overcast	64 / 76 °F	3%	14 mph E	3.0 ft	3:58 am	NBM
Tue 3	Light drizzle	66 / 76 °F	30% · 0.28 in	16 mph ESE	3.2 ft	4:59 am · 11:31 pm	NBM
Wed 4	Light showers	61 / 75 °F	42% · 0.77 in	14 mph S	2.5 ft	6:11 am · 11:01 pm	NBM
Thu 5	Light showers	57 / 73 °F	18% · 0.06 in	10 mph W	2.2 ft	9:33 pm	NBM
Fri 6	Overcast	53 / 71 °F	4% · 0.02 in	8 mph WNW	1.9 ft	8:59 pm	NBM
Sat 7	Overcast	52 / 72 °F	3%	7 mph ENE	1.8 ft	9:25 pm	NBM
Sun 8	Overcast	53 / 72 °F	7% · 0.02 in	6 mph NNE	1.1 ft	9:59 pm	NBM + ECMWF
Mon 9	Overcast	51 / 71 °F	14%	7 mph N	0.9 ft	10:36 pm	ECMWF
Tue 10	Partly cloudy	54 / 72 °F	10%	6 mph N	0.6 ft	11:14 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 1:00 pm; then NBM until Sunday 8 1:00 pm; then ECMWF until Thursday 12 9:00 am; then GFS.

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Partly cloudy	Mainly clear	Clear	Clear sky	Clear sky	Clear sky	Mainly clear	Mainly clear
Temperature	62°	59°	59°	64°	76°	78°	70°	64°
Chance of rain	0%	0%	0%	0%	0%	0%	0%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	2 NNW	3 NNE	4 NNE	7 NE	5 ENE	7 ESE	5 SSE	3 NW
Humidity	87%	93%	85%	81%	44%	40%	77%	81%
UV	0	0	0	1	6	3	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain on Saturday 31: take it with some caution.

What 6 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	76°	77°	76°	78°	78°	76°	78°
AIFS	75°	76°	75°	77°	75°	75°	75°
GFS	72°	73°	73°	73°	72°	71°	71°
ICON	78°	77°	75°	76°	73°	78°	75°
HRRR	79°	77°	—	—	—	—	—
NBM	76°	77°	77°	77°	77°	76°	76°
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	0	0	0	0.01 in	0.05 in	0	0.08 in
AIFS	0	0	0	0.08 in	0.27 in	0.05 in	0
GFS	0	0	0	0.43 in	0.36 in	0	0.02 in
ICON	0	0	0	0.09 in	0.39 in	0	0
HRRR	0	0	—	—	—	—	—
NBM	0	0	0	0.23 in	0.24 in	0	0.26 in
Confidence	high	high	high	medium	high	high	low

Do the models agree? · Wind
Wind (mph)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	819	817	1224	921	1020	1027	1331
AIFS	8	10	11	10	12	16	14
GFS	911	1216	1321	1523	1221	912	1523
ICON	614	716	818	920	715	818	615
HRRR	912	1018	—	—	—	—	—
NBM	812	813	1319	1320	1217	1418	1623
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF (51 scenarios)	0%	0%	4%	42%	71%	18%	42%
GFS (GEFS, 31 scenarios)	0%	0%	6%	71%	55%	13%	55%
NBM (NOAA)	0%	1%	1%	52%	47%	3%	30%
Thunderstorm (NBM)	0%	0%	2%	21%	18%	4%	6%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: normal temperatures, a bit wetter and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Above +3.4 °F	Well above +131%	A bit above +1.4 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit below −1.4 °F	Normal	A bit above +0.9 °F	68° / 60°
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.1 °F	Normal	A bit above +0.7 °F	68° / 61°
Nov 23 – Nov 29Nov 23–Nov 29	Normal −0.5 °F	A bit above +38%	A bit above +0.5 °F	65° / 58°
Nov 30 – Dec 6Nov 30–Dec 6	A bit below −1.1 °F	Above +64%	Normal −0.2 °F	62° / 56°

Coming months

When	TemperatureTemp.	Rain	Sea
November	Normal +0.5 °F	A bit above +43%	—
December	A bit below −1.1 °F	Normal	—
January	A bit below −1.6 °F	Normal	—
February	A bit below −1.8 °F	A bit above +37%	—
March	A bit below −1.1 °F	A bit above +46%	—

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Bay Saint Louis climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Bay Saint Louis is from October to November and from April to May: highs of 70 °F to 83 °F, about 8 rainy days a month and 7 hours of sunshine a day.

Hurricane season: from June to September, peaking in September. In the last 30 years (1996–2025), 20 tropical cyclones passed within 93 mi of Bay Saint Louis, about 7 every 10 years; 11 of them with hurricane-force winds (74 mph or more). The most recent: Francine, in September 2024.

61° 43°

JanJ
64° 46°

FebF
70° 52°

MarM
76° 58°

AprA
83° 65°

MayM
89° 71°

JunJ
91° 73°

JulJ
91° 73°

AugA
87° 70°

SepS
80° 60°

OctO
70° 50°

NovN
64° 45°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	61°	43°	5.98 in	10	4.5	56°	1.9 ft	–
FebruaryFeb	64°	46°	5.56 in	8	4.9	58°	1.8 ft	–
MarchMar	70°	52°	5.18 in	8	6.1	64°	1.8 ft	–
AprilApr	76°	58°	5.14 in	8	7.1	71°	1.8 ft	–
MayMay	83°	65°	5.11 in	9	8.5	78°	1.5 ft	–
JuneJun	89°	71°	7.75 in	15	7.7	84°	1.4 ft	4
JulyJul	91°	73°	6.59 in	19	7.7	85°	1.1 ft	2
AugustAug	91°	73°	6.91 in	18	7.5	86°	1.2 ft	4
SeptemberSep	87°	70°	6.41 in	11	7.3	83°	1.4 ft	7
OctoberOct	80°	60°	3.63 in	7	6.4	75°	1.7 ft	2
NovemberNov	70°	50°	4.52 in	7	5.7	66°	1.9 ft	1
DecemberDec	64°	45°	5.02 in	9	4.2	59°	1.8 ft	–

Month	Water	Waves	Cyclones
Jan	56°	1.9 ft	–
Feb	58°	1.8 ft	–
Mar	64°	1.8 ft	–
Apr	71°	1.8 ft	–
May	78°	1.5 ft	–
Jun	84°	1.4 ft	4
Jul	85°	1.1 ft	2
Aug	86°	1.2 ft	4
Sep	83°	1.4 ft	7
Oct	75°	1.7 ft	2
Nov	66°	1.9 ft	1
Dec	59°	1.8 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 67.78 in of rain on about 130 days and about 2,350 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now70 °Ffeels like 72 °F

Tomorrow57 / 77 °F

It's 70 °F now (feels like 72 °F). Today, 58 °F to 79 °F; tomorrow, 57 °F to 77 °F.

Chance of rain

Today 0%
Thu 29 1%
Fri 30 1%
Sat 31 52% 0.23 in
Sun 1 47% 0.24 in
Mon 2 3%
Tue 3 30% 0.28 in

Today the chance of rain reaches 0%. The next day with likely rain is Saturday 31: 52% and 0.23 in.

No rain in the last 7 days.

Humidity and dew point

Humidity77%

Dew point62 °F

Humidity is 77% now and the dew point is 62 °F.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now12 migood

Clouds47%

Visibility is good now (12 mi). No fog expected today.

UV index

Now0

Today's peak6moderate

Thu 29: 6 · Fri 30: 5 · Sat 31: 4

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

30.1030.20 30.19

Steady now (−0.01 inHg in 3 hours). Over the next 48 hours: −0.04 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 47

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Max wind
Tue 27	Overcast	60 / 77 °F	9 mph ENE
Mon 26	Overcast	59 / 76 °F	11 mph ENE
Sun 25	Overcast	58 / 78 °F	11 mph NE
Sat 24	Clear sky	57 / 76 °F	11 mph ENE
Fri 23	Clear sky	55 / 80 °F	8 mph ENE
Thu 22	Clear sky	53 / 80 °F	6 mph NNE
Wed 21	Overcast	53 / 78 °F	8 mph NE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Clear sky	58 / 76 °F	0	10 mph ENE
Mon 19	Overcast	53 / 75 °F	0	10 mph NE
Sun 18	Mainly clear	53 / 73 °F	0	12 mph NE
Sat 17	Overcast	56 / 71 °F	0	19 mph NNE
Fri 16	Partly cloudy	66 / 87 °F	0	20 mph N
Thu 15	Partly cloudy	66 / 84 °F	0	7 mph E
Wed 14	Overcast	66 / 83 °F	0	6 mph SE
Tue 13	Overcast	66 / 83 °F	0	6 mph SSE
Mon 12	Partly cloudy	62 / 85 °F	0	6 mph S
Sun 11	Mainly clear	62 / 85 °F	0	7 mph WSW
Sat 10	Overcast	64 / 79 °F	0	15 mph N
Fri 9	Light drizzle	71 / 78 °F	0.01 in	20 mph NNE
Thu 8	Overcast	70 / 83 °F	0	15 mph NE
Wed 7	Overcast	72 / 86 °F	0	10 mph NE
Tue 6	Overcast	72 / 83 °F	0	11 mph NE
Mon 5	Light showers	74 / 83 °F	0.47 in	9 mph NE
Sun 4	Showers	76 / 79 °F	2.39 in	10 mph ESE
Sat 3	Light showers	77 / 82 °F	0.83 in	11 mph E
Fri 2	Drizzle	78 / 86 °F	0.22 in	11 mph ESE
Thu 1	Drizzle	80 / 87 °F	0.16 in	13 mph SE
Wed 30	Light drizzle	74 / 88 °F	0.03 in	11 mph ESE
Tue 29	Light drizzle	68 / 89 °F	0.02 in	8 mph SE
Mon 28	Overcast	69 / 89 °F	0	8 mph E

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in Bay Saint LouisQuestions

What's the weather like today in Bay Saint Louis?

Partly cloudy, from 58 °F to 79 °F, with a light breeze from the south-southeast (5 mph) and a 0% chance of rain.

Will it rain tomorrow in Bay Saint Louis?

On Thursday 29 the chance of rain is 1% (0.00 in): overcast.

How warm will it be this week?

Between a low of 57 °F and a high of 79 °F; the warmest day, Wednesday 28.

What's the UV index today?

It reaches 6 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.13 inHg and steady: +0.00 inHg over the last 24 hours.

When is the best time to visit Bay Saint Louis?

The best time to visit Bay Saint Louis is from October to November and from April to May: highs of 70 °F to 83 °F, about 8 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Bay Saint Louis in October?

In October, Bay Saint Louis normally sees highs of 80 °F and lows of 60 °F, with about 7 rainy days (3.63 in for the month) and 6 hours of sunshine a day. The sea is around 75 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Bay Saint Louis?

The warmest is July, with average highs of 91 °F, and the coldest January, with lows of 43 °F. The wettest is June (7.75 in) and the driest, October.

When is hurricane season in Bay Saint Louis?

Hurricane season: from June to September, peaking in September. In the last 30 years (1996–2025), 20 tropical cyclones passed within 93 mi of Bay Saint Louis, about 7 every 10 years; 11 of them with hurricane-force winds (74 mph or more). The most recent: Francine, in September 2024.

More about Bay Saint Louis today

Weather near Bay Saint Louis

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 11 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 6:03 pm (local time).

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