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Marmora, NJ
Full City Profile · New Jersey · Atlantic County County
3.7
/5.0
B+
Good
2,011
Population
1,001/sq mi density
$94,621
Median Income
$54,346 per capita
$370,400
Home Value
$479,757 Zillow
$1,917
Median Rent
32.7% income on rent
57°F
Avg Temperature
297 sunny days/yr
114
Violent Crime/100K
4,170 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$94,621 median income, 1.3% unemployment
A
Affordability
4.5 / 5.0
$370,400 home value, $1,917/mo rent
F
Safety
1.0 / 5.0
114 violent crimes/100K
A
Education
4.5 / 5.0
43.6% bachelor's degree or higher
Marmora enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 37°F in January while summers reach 78°F in July. The area gets 297 sunny days per year. Air quality is rated Good with a median AQI of 39.
Temperature
37°F Jan (3°C)
78°F Jul (26°C)
| Annual Average | 56.9°F |
| 5% above US avg | |
| January Average | 37°F (3°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 297 days/yr |
Geography
| Elevation | 15 ft (5 m) |
| Area | 2.0 sq mi (5.2 km²) |
| Population Density | 1,001/sq mi |
| Coordinates | 39.2587°N, 74.6574°W |
| Timezone | America/New_York |
| County | Atlantic County County |
| Nearest Airport | Atlantic City International (ACY) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0381 ppm |
| SO₂ (Sulfur Dioxide) | 0.00 ppb |
| PM2.5 (Fine Particles) | 7.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.0 / 100 |
| Social Vulnerability | 46.5 / 100 |
| Community Resilience | 83.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 76 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 3.5 in | |
| February | 36°F (2°C) | 3.1 in | Coldest |
| March | 43°F (6°C) | 3.9 in | |
| April | 51°F (11°C) | 3.5 in | |
| May | 61°F (16°C) | 3.4 in | |
| June | 70°F (21°C) | 2.9 in | Driest |
| July | 78°F (26°C) | 3.6 in | Warmest |
| August | 74°F (24°C) | 4.3 in | Wettest |
| September | 68°F (20°C) | 3.2 in | |
| October | 57°F (14°C) | 3.0 in | |
| November | 48°F (9°C) | 3.3 in | |
| December | 39°F (4°C) | 3.4 in |
Marmora has a seasonal temperature swing of 43°F / from 36°F in February to 78°F in July. Total annual precipitation is 41.1 inches, with August being the wettest month (4.3") and June the driest (2.9").