Dorchester, NJ
Full City Profile · New Jersey · Cape May County County
3.4
/5.0
B
Good
78
Population
159/sq mi density
$100,875
Median Income
$28,168 per capita
54°F
Avg Temperature
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$100,875 median income, 0.0% unemployment
B
Education
3.0 / 5.0
25.4% bachelor's degree or higher
Dorchester experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 33°F in January while summers reach 76°F in July. Annual precipitation totals 43.4 inches. The area receives 22.0 inches of snow annually.
Temperature
33°F Jan (1°C)
76°F Jul (25°C)
| Annual Average | 54.2°F |
| 0% below US avg | |
| January Average | 33°F (1°C) |
| July Average | 76°F (25°C) |
Geography
| Elevation | 15 ft (5 m) |
| Area | 0.5 sq mi (1.3 km²) |
| Population Density | 159/sq mi |
| Coordinates | 39.2699°N, 74.9713°W |
| Timezone | America/New_York |
| County | Cape May County County |
| Nearest Airport | Atlantic City International (ACY) 25 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.0 / 100 |
| Social Vulnerability | 37.2 / 100 |
| Community Resilience | 98.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| 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 | - | - | 62 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 3.1 in | Coldest |
| February | 35°F (1°C) | 2.6 in | Driest |
| March | 42°F (5°C) | 4.1 in | |
| April | 52°F (11°C) | 3.5 in | |
| May | 62°F (17°C) | 3.1 in | |
| June | 71°F (22°C) | 3.9 in | |
| July | 76°F (25°C) | 4.3 in | Warmest |
| August | 74°F (24°C) | 4.6 in | Wettest |
| September | 68°F (20°C) | 3.2 in | |
| October | 56°F (13°C) | 3.8 in | |
| November | 46°F (8°C) | 3.2 in | |
| December | 37°F (3°C) | 4.0 in |
Dorchester has a seasonal temperature swing of 43°F / from 33°F in January to 76°F in July. Total annual precipitation is 43.4 inches, with August being the wettest month (4.6") and February the driest (2.6").