Elmer, NJ
Full City Profile · New Jersey · Gloucester County County
3.8
/5.0
B+
Good
1,152
Population
1,294/sq mi density
$92,757
Median Income
$42,084 per capita
$206,300
Home Value
$357,034 Zillow
$1,627
Median Rent
21.6% income on rent
56°F
Avg Temperature
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$92,757 median income, 3.6% unemployment
A+
Affordability
5.0 / 5.0
$206,300 home value, $1,627/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
B
Education
3.0 / 5.0
25.4% bachelor's degree or higher
Elmer enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 34°F in January while summers reach 77°F in July. Annual precipitation totals 46.6 inches. The area receives 13.3 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
34°F Jan (1°C)
77°F Jul (25°C)
| Annual Average | 55.8°F |
| 3% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 113 ft (34 m) |
| Area | 0.9 sq mi (2.3 km²) |
| Population Density | 1,294/sq mi |
| Coordinates | 39.5923°N, 75.1746°W |
| Timezone | America/New_York |
| County | Gloucester County County |
| Nearest Airport | Philadelphia International (PHL) 20 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 | - | - | 122 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 23 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 3.2 in | Coldest |
| February | 36°F (2°C) | 3.1 in | Driest |
| March | 44°F (7°C) | 3.9 in | |
| April | 54°F (12°C) | 3.2 in | |
| May | 63°F (17°C) | 3.2 in | |
| June | 73°F (23°C) | 4.5 in | |
| July | 77°F (25°C) | 5.1 in | Warmest, Wettest |
| August | 75°F (24°C) | 4.6 in | |
| September | 69°F (21°C) | 4.2 in | |
| October | 58°F (14°C) | 3.9 in | |
| November | 47°F (8°C) | 3.4 in | |
| December | 39°F (4°C) | 4.4 in |
Elmer has a seasonal temperature swing of 43°F / from 34°F in January to 77°F in July. Total annual precipitation is 46.6 inches, with July being the wettest month (5.1") and February the driest (3.1").