Weather in Saint-Louis

14-day forecast · updated today, Thursday, October 29, at 6:05 am (GMT+4)

Now · mainly clear 71 °F

Feels like: 74 °F
Low / high: 67 / 85 °F
Rain: 16%
Wind: 4 mph NNE

→ 30.03 inHg · steady UV 11 · extreme

Today in Saint-Louis: partly cloudy, 67 °F to 85 °F, with a 16% chance of rain and a light breeze from the north-northeast (4 mph). Tomorrow, light drizzle, 68 °F to 86 °F and a 31% chance of rain. The warmest day of the week is Friday 30, at 86 °F. Next likely rain: Saturday 31 (99%).

Measured now at the airport

Reunion/Pierrefonds (FMEP), 2.5 mi away · 35 min ago

Visibility6.2 mi or more

WeatherNothing to note

Temperature70 °F

Wind5 mph from the north

It's what the airport's weather station measured, not a forecast: on the coast, wind and fog can be different. Airports report every 30 or 60 minutes.

Airport METAR report, via NOAA's Aviation Weather Center (aviationweather.gov). Sources and licenses

Temperatures for the next 14 days

85° 67°
Today
86° 68°
Fri 30
82° 73°
Sat 31
83° 73°
Sun 1
81° 75°
Mon 2
84° 72°
Tue 3
83° 69°
Wed 4
80° 72°
Thu 5
83° 69°
Fri 6
83° 70°
Sat 7
84° 68°
Sun 8
86° 68°
Mon 9
85° 73°
Tue 10
82° 73°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Partly cloudy	67 / 85 °F	16%	4 mph N	4.1 ft	3:15 am · 2:54 pm	ECMWF
Fri 30	Light drizzle	68 / 86 °F	31% · 0.01 in	4 mph NNW	4.3 ft	4:13 am · 3:39 pm	ECMWF
Sat 31	Light showers	73 / 82 °F	99% · 0.54 in	5 mph NNE	5.1 ft	5:31 am · 4:36 pm	ECMWF
Sun 1	Drizzle	73 / 83 °F	100% · 0.18 in	4 mph SW	6.0 ft	7:24 am · 6:05 pm	ECMWF
Mon 2	Light rain	75 / 81 °F	84% · 0.39 in	7 mph SSW	5.9 ft	9:08 am · 8:10 pm	ECMWF
Tue 3	Overcast	72 / 84 °F	65%	8 mph SSW	4.8 ft	10:10 am · 9:45 pm	ECMWF
Wed 4	Light drizzle	69 / 83 °F	69% · 0.03 in	7 mph SW	4.6 ft	10:53 am · 10:48 pm	ECMWF
Thu 5	Drizzle	72 / 80 °F	69% · 0.19 in	7 mph WSW	4.1 ft	11:26 am · 11:34 pm	ECMWF
Fri 6	Light drizzle	69 / 83 °F	59% · 0.07 in	7 mph SW	4.3 ft	11:53 am	ECMWF
Sat 7	Overcast	70 / 83 °F	45%	7 mph SW	4.1 ft	12:12 am · 12:17 pm	ECMWF
Sun 8	Overcast	68 / 84 °F	57%	8 mph SSW	3.7 ft	12:45 am · 12:39 pm	ECMWF
Mon 9	Drizzle	68 / 86 °F	69% · 0.14 in	7 mph S	4.3 ft	1:14 am · 1:00 pm	ECMWF
Tue 10	Heavy drizzle	73 / 85 °F	53% · 0.40 in	5 mph S	8.2 ft	1:43 am · 1:22 pm	ECMWF
Wed 11	Light showers	73 / 82 °F	53% · 0.65 in	5 mph SW	7.3 ft	2:12 am · 1:44 pm	ECMWF

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	Mainly clear	Mainly clear	Mainly clear	Mainly clear	Mainly clear	Mainly clear	Mainly clear	Partly cloudy
Temperature	68°	67°	71°	81°	85°	84°	78°	72°
Chance of rain	0%	0%	0%	0%	3%	14%	7%	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)	4 NE	4 NNE	4 NNE	2 SW	4 SSW	4 SW	1 W	3 NNE
Humidity	70%	73%	78%	62%	58%	62%	80%	82%
UV	0	0	0	5	11	5	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on temperature today: take it with some caution.

What 4 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	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	85°	86°	82°	83°	81°	84°	83°
AIFS	83°	84°	83°	83°	82°	82°	82°
GFS	75°	77°	75°	76°	74°	72°	71°
ICON	78°	81°	81°	78°	76°	76°	77°
Confidence	medium	medium	medium	medium	medium	low	low

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0.01 in	0.54 in	0.18 in	0.39 in	0	0.03 in
AIFS	0.02 in	0.11 in	0.42 in	0.29 in	0.56 in	0.31 in	0.24 in
GFS	0	0	0.04 in	0.02 in	0.02 in	0.02 in	0.04 in
ICON	0.01 in	0.01 in	0.22 in	0.30 in	0.08 in	0.06 in	0.07 in
Confidence	high	medium	medium	medium	medium	low	low

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	417	417	520	419	722	822	722
AIFS	3	2	2	2	2	2	2
GFS	149	1310	99	119	85	84	105
ICON	813	721	723	614	713	611	611
Confidence	medium	medium	high	medium	high	high	medium

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	16%	31%	99%	100%	84%	65%	69%
GFS (GEFS, 31 scenarios)	39%	29%	97%	88%	94%	95%	97%

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, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +1.1 °F	Normal	A bit above +0.7 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.7 °F	Normal	A bit above +0.7 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	Normal +0.7 °F	Normal	A bit above +0.9 °F	78° / 72°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +0.9 °F	Normal	A bit above +0.9 °F	79° / 73°
Nov 30 – Dec 6Nov 30–Dec 6	Normal +0.7 °F	Normal	A bit above +1.1 °F	80° / 74°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +0.9 °F	Normal	A bit above +0.5 °F
December	A bit above +1.8 °F	Normal	A bit above +1.3 °F
January	A bit above +2.3 °F	Normal	Above +2.0 °F
February	Above +2.7 °F	Normal	Above +2.3 °F
March	A bit above +2.3 °F	Normal	Above +2.2 °F

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.

Saint-Louis climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Saint-Louis is from June to November: highs of 76 °F to 82 °F, about 5 rainy days a month and 8 hours of sunshine a day.

Cyclone season: from January to March, peaking in January. In the last 30 years (1996–2025), 12 tropical cyclones passed within 93 mi of Saint-Louis, about 4 every 10 years; 7 of them with hurricane-force winds (74 mph or more). The most recent: Garance, in February 2025.

87° 75°

JanJ
86° 75°

FebF
86° 74°

MarM
84° 72°

AprA
81° 69°

MayM
78° 66°

JunJ
76° 64°

JulJ
77° 64°

AugA
78° 65°

SepS
79° 68°

OctO
82° 71°

NovN
85° 74°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	87°	75°	6.64 in	14	7.0	82°	7.3 ft	6
FebruaryFeb	86°	75°	5.33 in	13	7.1	82°	7.0 ft	2
MarchMar	86°	74°	7.85 in	13	7.1	82°	7.7 ft	2
AprilApr	84°	72°	3.82 in	10	7.5	81°	7.9 ft	1
MayMay	81°	69°	3.74 in	8	7.4	79°	8.1 ft	–
JuneJun	78°	66°	2.57 in	6	7.7	77°	9.1 ft	–
JulyJul	76°	64°	2.18 in	5	7.8	75°	9.3 ft	–
AugustAug	77°	64°	1.79 in	6	8.8	74°	8.6 ft	–
SeptemberSep	78°	65°	1.95 in	5	8.2	74°	8.1 ft	–
OctoberOct	79°	68°	1.28 in	5	8.0	75°	7.2 ft	–
NovemberNov	82°	71°	2.52 in	6	7.9	77°	6.6 ft	1
DecemberDec	85°	74°	3.26 in	9	7.7	80°	6.7 ft	–

Month	Water	Waves	Cyclones
Jan	82°	7.3 ft	6
Feb	82°	7.0 ft	2
Mar	82°	7.7 ft	2
Apr	81°	7.9 ft	1
May	79°	8.1 ft	–
Jun	77°	9.1 ft	–
Jul	75°	9.3 ft	–
Aug	74°	8.6 ft	–
Sep	74°	8.1 ft	–
Oct	75°	7.2 ft	–
Nov	77°	6.6 ft	1
Dec	80°	6.7 ft	–

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

A normal year brings 42.94 in of rain on about 100 days and about 2,800 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

Now71 °Ffeels like 74 °F

Tomorrow68 / 86 °F

It's 71 °F now (feels like 74 °F). Today, 67 °F to 85 °F; tomorrow, 68 °F to 86 °F.

Chance of rain

Today 16%
Fri 30 31% 0.01 in
Sat 31 99% 0.54 in
Sun 1 100% 0.18 in
Mon 2 84% 0.39 in
Tue 3 65%
Wed 4 69% 0.03 in

Today the chance of rain reaches 16%. The next day with likely rain is Saturday 31: 99% and 0.54 in.

Recent rain: last 24 hours, 0.05 in; last 3 days, 0.18 in; last 7 days, 0.67 in.

Humidity and dew point

Humidity78%

Dew point64 °F

Humidity is 78% now and the dew point is 64 °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

Now14 migood

Clouds41%

Visibility is good now (14 mi). No fog expected today.

UV index

Now0

Today's peak11extreme

Fri 30: 12 · Sat 31: 7 · Sun 1: 11

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

29.9030.0030.10 29.93

Steady now (+0.02 inHg in 3 hours). It barely changes over the next 48 hours. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 14

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	Rain	Max wind
Wed 28	Light drizzle	69 / 84 °F	0.05 in	6 mph SSW
Tue 27	Light drizzle	72 / 82 °F	0.06 in	9 mph SW
Mon 26	Light drizzle	72 / 81 °F	0.09 in	7 mph S
Sun 25	Light rain	70 / 82 °F	0.32 in	8 mph S
Sat 24	Partly cloudy	67 / 84 °F	0	8 mph S
Fri 23	Drizzle	69 / 83 °F	0.15 in	6 mph SSW
Thu 22	Overcast	69 / 84 °F	0	8 mph SSW

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light drizzle	69 / 83 °F	0.02 in	8 mph SSW
Tue 20	Light drizzle	68 / 83 °F	0.01 in	6 mph S
Mon 19	Light drizzle	69 / 83 °F	0.06 in	9 mph SSW
Sun 18	Drizzle	68 / 82 °F	0.11 in	9 mph WSW
Sat 17	Light drizzle	70 / 84 °F	0.02 in	7 mph SW
Fri 16	Light drizzle	68 / 83 °F	0.05 in	6 mph S
Thu 15	Overcast	66 / 83 °F	0	7 mph SW
Wed 14	Light drizzle	67 / 83 °F	0.02 in	8 mph SW
Tue 13	Light drizzle	68 / 85 °F	0.06 in	7 mph SE
Mon 12	Drizzle	71 / 83 °F	0.11 in	7 mph SSE
Sun 11	Heavy drizzle	69 / 83 °F	0.20 in	7 mph SSW
Sat 10	Light rain	69 / 81 °F	0.38 in	6 mph SW
Fri 9	Light drizzle	68 / 82 °F	0.02 in	7 mph SSW
Thu 8	Light drizzle	69 / 81 °F	0.08 in	7 mph SSW
Wed 7	Light drizzle	69 / 80 °F	0.12 in	8 mph SW
Tue 6	Light drizzle	66 / 79 °F	0.08 in	8 mph SSE
Mon 5	Partly cloudy	66 / 79 °F	0	9 mph SSE
Sun 4	Overcast	67 / 80 °F	0	8 mph S
Sat 3	Drizzle	71 / 79 °F	0.13 in	6 mph SSE
Fri 2	Light drizzle	67 / 82 °F	0.07 in	9 mph SSE
Thu 1	Overcast	66 / 80 °F	0	9 mph WSW
Wed 30	Light drizzle	67 / 81 °F	0.05 in	9 mph WSW
Tue 29	Heavy drizzle	71 / 82 °F	0.26 in	6 mph S

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 Saint-LouisQuestions

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

Partly cloudy, from 67 °F to 85 °F, with a light breeze from the north-northeast (4 mph) and a 16% chance of rain.

Will it rain tomorrow in Saint-Louis?

On Friday 30 the chance of rain is 31% (0.01 in): light drizzle.

How warm will it be this week?

Between a low of 67 °F and a high of 86 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 11 (extreme). Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Is the pressure rising or falling?

It's 30.03 inHg and steady: −0.04 inHg over the last 24 hours.

When is the best time to visit Saint-Louis?

The best time to visit Saint-Louis is from June to November: highs of 76 °F to 82 °F, about 5 rainy days a month and 8 hours of sunshine a day.

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

In October, Saint-Louis normally sees highs of 79 °F and lows of 68 °F, with about 5 rainy days (1.28 in for the month) and 8 hours of sunshine a day. The sea is around 75 °F. These are 1991–2020 averages.

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

The warmest is January, with average highs of 87 °F, and the coldest July, with lows of 64 °F. The wettest is March (7.85 in) and the driest, October.

When is cyclone season in Saint-Louis?

Cyclone season: from January to March, peaking in January. In the last 30 years (1996–2025), 12 tropical cyclones passed within 93 mi of Saint-Louis, about 4 every 10 years; 7 of them with hurricane-force winds (74 mph or more). The most recent: Garance, in February 2025.

More about Saint-Louis today

Weather near 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 6.2 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 6:05 am (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from