Three Bridges, NJ
Full City Profile · New Jersey · Hunterdon County County
3.3
/5.0
B
Good
564
Population
1,064/sq mi density
$525,900
Home Value
$624,249 Zillow
52°F
Avg Temperature
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
B
Education
3.3 / 5.0
29.0% bachelor's degree or higher
Three Bridges experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 75°F in July. Annual precipitation totals 51.0 inches. The area receives 23.9 inches of snow annually. Air quality is rated Good with a median AQI of 41.
Temperature
30°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 52.4°F |
| 3% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 130 ft (40 m) |
| Area | 0.5 sq mi (1.4 km²) |
| Population Density | 1,064/sq mi |
| Coordinates | 40.5206°N, 74.8002°W |
| Timezone | America/New_York |
| County | Hunterdon County County |
| Nearest Airport | Central Jersey Regional (JVI) 11 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
| Good Days % | 72.9% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0452 ppm |
| PM2.5 (Fine Particles) | 8.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.7 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 95.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
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 | - | 147 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 18 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 87 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.8 in | Coldest |
| February | 32°F (-0°C) | 3.0 in | Driest |
| March | 40°F (4°C) | 4.3 in | |
| April | 51°F (11°C) | 4.1 in | |
| May | 61°F (16°C) | 4.4 in | |
| June | 70°F (21°C) | 4.7 in | |
| July | 75°F (24°C) | 5.5 in | Warmest, Wettest |
| August | 73°F (23°C) | 4.3 in | |
| September | 66°F (19°C) | 4.5 in | |
| October | 54°F (12°C) | 4.4 in | |
| November | 44°F (7°C) | 3.5 in | |
| December | 35°F (2°C) | 4.6 in |
Three Bridges has a seasonal temperature swing of 45°F / from 30°F in January to 75°F in July. Total annual precipitation is 51.0 inches, with July being the wettest month (5.5") and February the driest (3.0").