Gretna weather in March

In March, Gretna sees average daytime highs of 69°F and overnight lows near 57°F, with 4.5 in of rain across 9.4 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 66°F in the first days to 72°F by the end. The sky is clear or mostly clear about 36% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of March to 12 h 12 min by month's end. Set against the rest of the year, March is Gretna's 7th-clearest and 3rd-windiest month. For the whole year in context, see Gretna's year-round climate.

Daytime high
69°
8th warmest
Overnight low
57°
5th coldest
Rainfall
4.5 in
9.4 wet days
Daylight
11 h 48 min
6:17 AM – 6:03 PM
Cloud cover
54%
7th clearest
Wind
9 mph
3rd windiest
Solar energy
4.69 kWh/m²
Travel score
6.6
out of 10

Gretna is second-largest city in, and parish seat of, Jefferson Parish in the U.S. state of Louisiana.

Density
1,545/km²
people per km²
Founded
1836

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 66°F in the first days to 72°F by the end.

A typical March day in Gretna reaches about 69°F in the afternoon and slips back to 57°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 60°F and 77°F. Set against its neighbours, March runs about 5°F warmer than February and about 6°F cooler than April.

40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
16654
26654
36654
46754
56754
66754
76755
86755
96755
106855
116855
126856
136856
146956
156956
166957
176957
186957
197057
207058
217058
227158
237158
247158
257159
267159
277159
287259
297260
307260
317260

How March really feels in Gretna

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Gretna weather by month

How March compares with the rest of the year at a glance. March is the 8th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan61° / 48°4.49.710.35.1
Feb64° / 51°4.28.810.95.8
Mar69° / 57°4.59.411.86.6
Apr75° / 63°3.98.412.77.2
May82° / 70°3.69.213.56.5
Jun86° / 76°5.215.213.94.4
Jul88° / 78°5.617.913.73.7
Aug87° / 78°6.317.413.13.8
Sep84° / 74°4.912.812.25.2
Oct77° / 65°3.5811.37.4
Nov69° / 56°3.37.310.57.0
Dec63° / 51°3.89.210.15.7

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 15% of March, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44654
54654
64654
74654
84753
94753
104753
114852
124852
134951
145050
155149
165248
175347
185446
195545
205644
215545
225644
235743
245743
255743
265743
275743
285644
295644
305545
315446

Chance of precipitation in March

Any precipitation

Gretna gets around 4.5 in of rain over 9.4 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
133
232
332
432
532
632
731
831
931
1031
1130
1230
1330
1429
1529
1629
1728
1828
1928
2028
2128
2228
2328
2428
2528
2628
2729
2829
2930
3030
3131

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the dry band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1571320100
2571320100
3561320110
4561320110
5561320110
6551321110
7541421110
8541421110
9521422120
10511522120
11501523120
12491623120
13471623130
14461724130
15451724130
16441724141
17431824141
18421824151
19411825161
20401825171
21391825171
22391824181
23381824191
24381724201
25371723211
26371723221
27371722231
28361722241
29361622251
30351621262
31351621262

Wind in March

Winds average 9 mph in March.

Across March, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 18 min at the start of March to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over March. Sunrise moves from 6:34 AM to 5:58 AM, and sunset from 5:53 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:345:53
211.46:335:54
311.46:325:55
411.46:315:55
511.46:295:56
611.56:285:57
711.56:275:57
811.56:265:58
911.66:255:59
1011.66:245:59
1111.66:236:00
1211.76:216:01
1311.76:206:01
1411.76:196:02
1511.76:186:03
1611.86:176:03
1711.86:156:04
1811.86:146:04
1911.96:136:05
2011.96:126:06
2111.96:106:06
2212.06:096:07
2312.06:086:08
2412.06:076:08
2512.16:056:09
2612.16:046:09
2712.16:036:10
2812.16:026:11
2912.26:006:11
3012.25:596:12
3112.25:586:12

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.69 kWh/m².

For context, solar energy here swings from a low near 2.73 kWh/m² to a high of 6.23 kWh/m² in May across the year — March's 4.69 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.2Bright
34.2Bright
44.2Bright
54.3Bright
64.3Bright
74.3Bright
84.4Bright
94.4Bright
104.5Bright
114.5Bright
124.5Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.7Bright
184.8Bright
194.8Bright
204.9Bright
214.9Bright
224.9Bright
235.0Bright
245.0Bright
255.0Bright
265.1Bright
275.1Bright
285.1Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in March

Hazard calendar for Gretna

In seasonPeak

None of Gretna's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Gretna sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is March a good time to visit Gretna?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.6
Sightseeing
4th-best month of the year
3.8
Beach & pool
9th-best month of the year

March is a reasonable time to visit Gretna for sightseeing.

What to pack for Gretna in March

From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In March, Gretna sees daytime highs around 69°F and nights near 57°F. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Gretna in March

The nearest coast averages about 64°F in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 mi away) is warmest in August at about 86°F and coldest in January near 58°F.

It's comfortable for a long swim from Apr 5 to Nov 13 — about 7.3 months when the water holds above 68°F.

50°60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan58Bracing
Feb58Bracing
Mar64Cool
Apr71Refreshing
May78Warm
Jun84Tropical
Jul86Tropical
Aug86Tropical
Sep83Tropical
Oct76Warm
Nov67Cool
Dec61Cool

UV index in Gretna in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gretna peaks around July 11 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 11UV 10Dec 19UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr10Very high
May10Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Gretna in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Gretna is worst in July — around 22 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (November, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1621 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar10Good
Apr10Good
May13Moderate
Jun18Moderate
Jul22Moderate
Aug17Moderate
Sep11Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Gretna?

Gretna sits at 29.9°N, 90.1°W, 0 ft above sea level, in United States. The nearest listed city is Terrytown, 1.2 mi away.

Topography around Gretna

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Gretna.

Within 2 miles, the terrain around Gretna has only modest variations in elevation — a maximum elevation change of 89 ft around an average of 3 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 141 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 243 ft.

The land around Gretna is covered by artificial surfaces (56%) and grassland (20%) within 2 miles, artificial surfaces (29%) and trees (27%) within 10 miles, and water (41%) and trees (28%) within 50 miles.

2 miles
89 ft
10 miles
141 ft
50 miles
243 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
March weather nearby: Terrytown 1.2 mi · Harvey 1.9 mi · Marrero 3.1 mi · New Orleans 3.1 mi · Chalmette 5.6 mi · Estelle 5.6 mi · Metairie 7.5 mi · Metairie Terrace 8.1 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Gretna (29.9147°, -90.054°, elevation 0 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).