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Harvey, LA
Full City Profile · Louisiana · St. Charles Parish County
2.6
/5.0
C+
Fair
21,710
Population
3,345/sq mi density
$43,524
Median Income
$27,147 per capita
$189,700
Home Value
$223,981 Zillow
$1,196
Median Rent
45.2% income on rent
70°F
Avg Temperature
317 sunny days/yr
236
Violent Crime/100K
2,801 property/100K
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.5 / 5.0
$43,524 median income, 4.9% unemployment
A
Affordability
4.2 / 5.0
$189,700 home value, $1,196/mo rent
F
Safety
1.0 / 5.0
236 violent crimes/100K
C
Education
2.5 / 5.0
18.7% bachelor's degree or higher
Harvey enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 54°F in January while summers reach 84°F in July. The area gets 317 sunny days per year. Annual precipitation totals 65.9 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
54°F Jan (12°C)
84°F Jul (29°C)
| Annual Average | 70.2°F |
| 30% above US avg | |
| January Average | 54°F (12°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 317 days/yr |
Geography
| Elevation | -4 ft (-1 m) |
| Area | 6.5 sq mi (16.8 km²) |
| Population Density | 3,345/sq mi |
| Coordinates | 29.8888°N, 90.0664°W |
| Timezone | America/Chicago |
| County | St. Charles Parish County |
| Nearest Airport | Louis Armstrong New Orleans International (MSY) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
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 | 54°F (12°C) | 5.4 in | Coldest |
| February | 56°F (13°C) | 5.5 in | |
| March | 62°F (17°C) | 5.3 in | |
| April | 68°F (20°C) | 4.6 in | |
| May | 76°F (24°C) | 5.0 in | |
| June | 81°F (27°C) | 5.6 in | |
| July | 84°F (29°C) | 6.7 in | Warmest, Wettest |
| August | 83°F (28°C) | 6.3 in | |
| September | 79°F (26°C) | 5.6 in | |
| October | 71°F (21°C) | 3.2 in | Driest |
| November | 62°F (17°C) | 4.7 in | |
| December | 56°F (13°C) | 5.1 in |
Harvey has a seasonal temperature swing of 30°F / from 54°F in January to 84°F in July. Total annual precipitation is 62.9 inches, with July being the wettest month (6.7") and October the driest (3.2").