Somerdale, NJ
Full City Profile · New Jersey · Gloucester County County
3.0
/5.0
B
Good
5,535
Population
3,982/sq mi density
$79,101
Median Income
$43,990 per capita
$221,600
Home Value
$356,101 Zillow
$1,141
Median Rent
36.7% income on rent
56°F
Avg Temperature
246
Violent Crime/100K
5,287 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$79,101 median income, 8.8% unemployment
A+
Affordability
5.0 / 5.0
$221,600 home value, $1,141/mo rent
F
Safety
1.0 / 5.0
246 violent crimes/100K
C+
Education
2.7 / 5.0
21.3% bachelor's degree or higher
Somerdale enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 34°F in January while summers reach 79°F in July. Annual precipitation totals 48.1 inches. The area receives 21.9 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
34°F Jan (1°C)
79°F Jul (26°C)
| Annual Average | 56.3°F |
| 4% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 79°F (26°C) |
Geography
| Elevation | 84 ft (26 m) |
| Area | 1.4 sq mi (3.6 km²) |
| Population Density | 3,982/sq mi |
| Coordinates | 39.8454°N, 75.0217°W |
| Timezone | America/New_York |
| County | Gloucester County County |
| Nearest Airport | South Jersey Regional (LLY) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
| Good Days % | 72.6% |
| Unhealthy Days | 8 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0470 ppm |
| PM2.5 (Fine Particles) | 7.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.6 / 100 |
| Social Vulnerability | 16.0 / 100 |
| Community Resilience | 85.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 92 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 16 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 3.6 in | Coldest |
| February | 36°F (2°C) | 3.1 in | Driest |
| March | 44°F (6°C) | 4.6 in | Wettest |
| April | 55°F (13°C) | 3.8 in | |
| May | 64°F (18°C) | 3.7 in | |
| June | 74°F (23°C) | 4.3 in | |
| July | 79°F (26°C) | 4.1 in | Warmest |
| August | 77°F (25°C) | 4.6 in | |
| September | 70°F (21°C) | 4.4 in | |
| October | 58°F (15°C) | 4.0 in | |
| November | 47°F (9°C) | 3.3 in | |
| December | 39°F (4°C) | 4.5 in |
Somerdale has a seasonal temperature swing of 45°F / from 34°F in January to 79°F in July. Total annual precipitation is 48.1 inches, with March being the wettest month (4.6") and February the driest (3.1").