Weather in Gretna

14-day forecast · updated today, Wednesday, October 28, at 4:58 pm (CDT)

Now · clear sky 77 °F

Feels like: 72 °F
Low / high: 59 / 79 °F
Rain: 0%
Wind: 7 mph ENE

→ 30.12 inHg · steady

Today in Gretna: mainly clear, 59 °F to 79 °F, with a 0% chance of rain and a light breeze from the east-northeast (7 mph). Tomorrow, overcast, 57 °F to 77 °F and a 0% chance of rain. The warmest day of the week is Wednesday 28, at 79 °F. Next likely rain: Saturday 31 (57%).

Temperatures for the next 14 days

79° 59°
Today
77° 57°
Thu 29
78° 65°
Fri 30
78° 68°
Sat 31
78° 69°
Sun 1
78° 67°
Mon 2
78° 68°
Tue 3
76° 64°
Wed 4
72° 60°
Thu 5
71° 57°
Fri 6
71° 56°
Sat 7
71° 57°
Sun 8
66° 55°
Mon 9
69° 58°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	Model
Today · 28	Mainly clear	59 / 79 °F	0%	8 mph ENE	HRRR
Thu 29	Overcast	57 / 77 °F	0%	9 mph ENE	HRRR + NBM
Fri 30	Light drizzle	65 / 78 °F	2%	13 mph ENE	NBM
Sat 31	Light drizzle	68 / 78 °F	57% · 0.13 in	12 mph E	NBM
Sun 1	Light drizzle	69 / 78 °F	34% · 0.18 in	9 mph ENE	NBM
Mon 2	Overcast	67 / 78 °F	5%	12 mph E	NBM
Tue 3	Light drizzle	68 / 78 °F	30% · 0.15 in	15 mph SE	NBM
Wed 4	Light showers	64 / 76 °F	35% · 0.57 in	13 mph SSW	NBM
Thu 5	Drizzle	60 / 72 °F	14% · 0.06 in	11 mph W	NBM
Fri 6	Light drizzle	57 / 71 °F	7% · 0.02 in	9 mph NW	NBM
Sat 7	Overcast	56 / 71 °F	3%	8 mph ENE	NBM
Sun 8	Overcast	57 / 71 °F	10% · 0.02 in	7 mph NNE	NBM + ECMWF
Mon 9	Overcast	55 / 66 °F	13%	6 mph N	ECMWF
Tue 10	Clear sky	58 / 69 °F	12%	4 mph NNW	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 11:00 am; 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.

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	Clear	Clear	Clear	Clear sky	Clear sky	Clear sky	Mainly clear	Mainly clear
Temperature	62°	59°	61°	65°	75°	79°	73°	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 NNE	2 NNW	4 ENE	6 NE	6 NE	6 ENE	4 ENE	3 ESE
Humidity	87%	96%	98%	91%	49%	43%	32%	61%
UV	0	0	0	1	6	3	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR

Do the models agree?

High confidence

The models agree for the next few days: the forecast is fairly solid.

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°	76°	75°	78°	78°	76°	80°
AIFS	76°	77°	77°	78°	76°	76°	76°
GFS	80°	80°	81°	82°	77°	79°	83°
ICON	78°	78°	77°	77°	77°	77°	78°
HRRR	79°	78°	—	—	—	—	—
NBM	77°	77°	78°	78°	78°	78°	78°
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	0.01 in	0.02 in	0.01 in	0	0.05 in
AIFS	0	0	0.05 in	0.13 in	0.22 in	0.05 in	0.05 in
GFS	0	0	0	0.06 in	0.05 in	0	0.06 in
ICON	0	0	0	0.20 in	0.11 in	0	0
HRRR	0	0	—	—	—	—	—
NBM	0	0	0	0.13 in	0.18 in	0	0.13 in
Confidence	high	high	high	high	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	715	917	1020	1020	916	921	1128
AIFS	6	7	11	9	11	15	14
GFS	1012	1115	1321	1123	1020	917	1323
ICON	614	614	819	614	615	615	513
HRRR	812	1015	—	—	—	—	—
NBM	812	913	1320	1218	912	1217	1525
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%	18%	71%	53%	39%	52%
GFS (GEFS, 31 scenarios)	0%	0%	14%	78%	39%	35%	55%
NBM (NOAA)	0%	0%	2%	57%	34%	5%	30%
Thunderstorm (NBM)	0%	0%	3%	21%	16%	3%	9%

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 and a bit wetter.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Above +3.8 °F	Above +99%	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit below −2.0 °F	Normal	69° / 59°
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +0.9 °F	Normal	69° / 60°
Nov 23 – Nov 29Nov 23–Nov 29	A bit below −0.9 °F	A bit above +45%	65° / 57°
Nov 30 – Dec 6Nov 30–Dec 6	A bit below −1.6 °F	Above +61%	63° / 55°

Coming months

When	TemperatureTemp.	Rain
November	Normal +0.4 °F	A bit above +47%
December	A bit below −1.4 °F	A bit above +28%
January	A bit below −2.0 °F	Normal
February	A bit below −2.3 °F	A bit above +48%
March	A bit below −1.4 °F	A bit above +43%

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.

Gretna climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Gretna is from March to May and from October to November: highs of 73 °F to 87 °F, about 8 rainy days a month and 7 hours of sunshine a day.

Hurricane season: from June to October, peaking in September. In the last 30 years (1996–2025), 21 tropical cyclones passed within 93 mi of Gretna, about 7 every 10 years; 10 of them with hurricane-force winds (74 mph or more). The most recent: Francine, in September 2024.

64° 44°

JanJ
68° 47°

FebF
74° 53°

MarM
80° 59°

AprA
87° 67°

MayM
91° 73°

JunJ
92° 74°

JulJ
92° 75°

AugA
89° 72°

SepS
82° 62°

OctO
73° 52°

NovN
67° 46°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	64°	44°	5.15 in	9	4.5	58°	1.9 ft	–
FebruaryFeb	68°	47°	5.87 in	8	4.7	58°	1.8 ft	–
MarchMar	74°	53°	4.35 in	8	5.9	64°	1.8 ft	–
AprilApr	80°	59°	4.65 in	8	6.9	71°	1.8 ft	–
MayMay	87°	67°	4.94 in	9	7.8	78°	1.5 ft	–
JuneJun	91°	73°	7.60 in	16	6.9	84°	1.4 ft	4
JulyJul	92°	74°	7.43 in	20	7.0	86°	1.1 ft	2
AugustAug	92°	75°	7.85 in	19	6.9	86°	1.2 ft	5
SeptemberSep	89°	72°	6.20 in	12	6.8	83°	1.4 ft	6
OctoberOct	82°	62°	3.87 in	8	6.2	75°	1.7 ft	3
NovemberNov	73°	52°	4.30 in	7	5.7	67°	1.9 ft	1
DecemberDec	67°	46°	4.85 in	9	4.3	61°	1.8 ft	–

Month	Water	Waves	Cyclones
Jan	58°	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	86°	1.1 ft	2
Aug	86°	1.2 ft	5
Sep	83°	1.4 ft	6
Oct	75°	1.7 ft	3
Nov	67°	1.9 ft	1
Dec	61°	1.8 ft	–

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

A normal year brings 67.09 in of rain on about 131 days and about 2,250 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

Now77 °Ffeels like 72 °F

Tomorrow57 / 77 °F

It's 77 °F now (feels like 72 °F). Today, 59 °F to 79 °F; tomorrow, 57 °F to 77 °F.

Chance of rain

Today 0%
Thu 29 0%
Fri 30 2%
Sat 31 57% 0.13 in
Sun 1 34% 0.18 in
Mon 2 5%
Tue 3 30% 0.15 in

Today the chance of rain reaches 0%. The next day with likely rain is Saturday 31: 57% and 0.13 in.

No rain in the last 7 days.

Humidity and dew point

Humidity25%

Dew point39 °F

Humidity is 25% now and the dew point is 39 °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

Now45 migood

Clouds18%

Visibility is good now (45 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now0

Today's peak6moderate

Thu 29: 6 · Fri 30: 4 · Sat 31: 5

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 30.18

Steady now (−0.03 inHg in 3 hours). Over the next 48 hours: −0.05 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 45

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	64 / 77 °F	7 mph ENE
Mon 26	Overcast	63 / 74 °F	9 mph ENE
Sun 25	Overcast	61 / 75 °F	9 mph ENE
Sat 24	Clear sky	62 / 75 °F	10 mph ENE
Fri 23	Mainly clear	61 / 79 °F	6 mph ENE
Thu 22	Partly cloudy	62 / 78 °F	4 mph N
Wed 21	Overcast	60 / 76 °F	5 mph NE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Partly cloudy	62 / 75 °F	0	9 mph ENE
Mon 19	Overcast	58 / 73 °F	0	10 mph NE
Sun 18	Overcast	56 / 70 °F	0	12 mph NE
Sat 17	Overcast	58 / 69 °F	0	20 mph NNE
Fri 16	Light drizzle	67 / 84 °F	0.01 in	20 mph N
Thu 15	Mainly clear	70 / 85 °F	0	7 mph ESE
Wed 14	Overcast	67 / 83 °F	0	6 mph ESE
Tue 13	Overcast	67 / 85 °F	0	6 mph SE
Mon 12	Overcast	67 / 85 °F	0	6 mph SE
Sun 11	Overcast	65 / 83 °F	0	6 mph SW
Sat 10	Light drizzle	67 / 78 °F	0.01 in	13 mph N
Fri 9	Light drizzle	72 / 78 °F	0.01 in	17 mph NE
Thu 8	Overcast	73 / 82 °F	0	13 mph NE
Wed 7	Overcast	75 / 83 °F	0	10 mph ENE
Tue 6	Light drizzle	75 / 81 °F	0.01 in	11 mph NE
Mon 5	Showers	76 / 82 °F	1.20 in	10 mph NE
Sun 4	Heavy showers	76 / 79 °F	3.39 in	10 mph ESE
Sat 3	Showers	78 / 85 °F	0.85 in	10 mph E
Fri 2	Heavy drizzle	78 / 86 °F	0.25 in	7 mph ESE
Thu 1	Light drizzle	77 / 87 °F	0.05 in	9 mph SE
Wed 30	Light drizzle	75 / 88 °F	0.08 in	9 mph ESE
Tue 29	Drizzle	74 / 88 °F	0.07 in	8 mph SE
Mon 28	Light drizzle	75 / 88 °F	0.01 in	6 mph WSW

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 GretnaQuestions

What's the weather like today in Gretna?

Mainly clear, from 59 °F to 79 °F, with a light breeze from the east-northeast (7 mph) and a 0% chance of rain.

Will it rain tomorrow in Gretna?

On Thursday 29 the chance of rain is 0% (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 30.12 inHg and steady: −0.02 inHg over the last 24 hours.

When is the best time to visit Gretna?

The best time to visit Gretna is from March to May and from October to November: highs of 73 °F to 87 °F, about 8 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Gretna in October?

In October, Gretna normally sees highs of 82 °F and lows of 62 °F, with about 8 rainy days (3.87 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 Gretna?

The warmest is July, with average highs of 92 °F, and the coldest January, with lows of 44 °F. The wettest is August (7.85 in) and the driest, October.

When is hurricane season in Gretna?

Hurricane season: from June to October, peaking in September. In the last 30 years (1996–2025), 21 tropical cyclones passed within 93 mi of Gretna, about 7 every 10 years; 10 of them with hurricane-force winds (74 mph or more). The most recent: Francine, in September 2024.

More about Gretna today

Weather near Gretna

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 6.7 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 4:58 pm (local time).

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