Rossmoor, NJ
Full City Profile · New Jersey · Middlesex County County
3.9
/5.0
B+
Good
3,136
Population
4,612/sq mi density
$54,367
Median Income
$54,051 per capita
$184,800
Home Value
$455,672 Zillow
$1,568
Median Rent
51.0% income on rent
53°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.0 / 5.0
$54,367 median income, 9.2% unemployment
A+
Affordability
4.8 / 5.0
$184,800 home value, $1,568/mo rent
B+
Education
3.9 / 5.0
36.7% bachelor's degree or higher
Rossmoor experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 31°F in January while summers reach 75°F in July. Annual precipitation totals 47.5 inches. The area receives 23.7 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
31°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 52.8°F |
| 2% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 144 ft (44 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 4,612/sq mi |
| Coordinates | 40.3348°N, 74.4701°W |
| Timezone | America/New_York |
| County | Middlesex County County |
| Nearest Airport | Central Jersey Regional (JVI) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
| Good Days % | 78.4% |
| Unhealthy Days | 5 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0452 ppm |
| NO₂ (Nitrogen Dioxide) | 12.7 ppb |
| PM2.5 (Fine Particles) | 8.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.8 / 100 |
| Social Vulnerability | 47.4 / 100 |
| Community Resilience | 45.5 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively Moderate |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 0.3 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1964 | LONG ISLAND, NY | Meteorological | 0.3 m | - | 127 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 51 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 86 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 3.5 in | Coldest |
| February | 33°F (0°C) | 2.6 in | Driest |
| March | 40°F (5°C) | 4.3 in | |
| April | 51°F (11°C) | 3.7 in | |
| May | 61°F (16°C) | 4.1 in | |
| June | 70°F (21°C) | 4.6 in | |
| July | 75°F (24°C) | 4.8 in | Warmest, Wettest |
| August | 73°F (23°C) | 4.3 in | |
| September | 66°F (19°C) | 4.2 in | |
| October | 54°F (12°C) | 4.0 in | |
| November | 44°F (7°C) | 3.3 in | |
| December | 36°F (2°C) | 4.2 in |
Rossmoor has a seasonal temperature swing of 44°F / from 31°F in January to 75°F in July. Total annual precipitation is 47.5 inches, with July being the wettest month (4.8") and February the driest (2.6").