Gretna, LA
Full City Profile · Louisiana · St. Charles Parish County
2.5
/5.0
C+
Fair
17,468
Population
4,324/sq mi density
$46,045
Median Income
$29,250 per capita
$242,600
Home Value
$242,127 Zillow
$1,017
Median Rent
51.0% income on rent
72°F
Avg Temperature
447
Violent Crime/100K
3,800 property/100K
C+
Overall
2.5 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.4 / 5.0
$46,045 median income, 6.9% unemployment
B+
Affordability
3.7 / 5.0
$242,600 home value, $1,017/mo rent
F
Safety
1.0 / 5.0
447 violent crimes/100K (18% above avg)
B
Education
3.1 / 5.0
26.0% bachelor's degree or higher
Gretna has a warm climate with an average annual temperature of 72°F (22°C). Winters average 55°F in January while summers reach 85°F in July. Annual precipitation totals 64.6 inches. The area receives 0.0 inches of snow annually.
Temperature
55°F Jan (13°C)
85°F Jul (30°C)
| Annual Average | 71.8°F |
| 33% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 85°F (30°C) |
Geography
| Elevation | -1 ft (0 m) |
| Area | 4.5 sq mi (11.6 km²) |
| Population Density | 4,324/sq mi |
| Coordinates | 29.9109°N, 90.0517°W |
| Timezone | America/Chicago |
| County | St. Charles Parish County |
| Nearest Airport | Louis Armstrong New Orleans International (MSY) 14 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 85.1 / 100 |
| Social Vulnerability | 41.7 / 100 |
| Community Resilience | 100.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 5.0 in | Coldest |
| February | 59°F (15°C) | 4.1 in | |
| March | 65°F (18°C) | 4.6 in | |
| April | 71°F (22°C) | 5.0 in | |
| May | 79°F (26°C) | 5.4 in | |
| June | 84°F (29°C) | 7.4 in | |
| July | 85°F (30°C) | 8.8 in | Wettest |
| August | 86°F (30°C) | 6.8 in | Warmest |
| September | 82°F (28°C) | 5.7 in | |
| October | 74°F (23°C) | 3.6 in | Driest |
| November | 64°F (18°C) | 3.8 in | |
| December | 58°F (14°C) | 4.5 in |
Gretna has a seasonal temperature swing of 30°F / from 55°F in January to 86°F in August. Total annual precipitation is 64.6 inches, with July being the wettest month (8.8") and October the driest (3.6").