Hewitt, NJ
Full City Profile · New Jersey · Passaic County County
4.2
/5.0
A
Great
2,797
Population
605/sq mi density
$182,516
Median Income
$78,257 per capita
$436,700
Home Value
$582,023 Zillow
$2,236
Median Rent
45.7% income on rent
52°F
Avg Temperature
A
Overall
4.2 / 5.0
Strong
B+
Economy
3.8 / 5.0
$182,516 median income, 29.5% unemployment
A+
Affordability
5.0 / 5.0
$436,700 home value, $2,236/mo rent
B+
Education
3.8 / 5.0
34.4% bachelor's degree or higher
Hewitt experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 29°F in January while summers reach 74°F in July. Annual precipitation totals 51.2 inches. The area receives 28.1 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
29°F Jan (-2°C)
74°F Jul (23°C)
| Annual Average | 51.8°F |
| 4% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 630 ft (192 m) |
| Area | 5.9 sq mi (15.3 km²) |
| Population Density | 605/sq mi |
| Coordinates | 41.1762°N, 74.3248°W |
| Timezone | America/New_York |
| County | Passaic County County |
| Nearest Airport | New York Stewart International (SWF) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
| Good Days % | 73.5% |
| Unhealthy Days | 2 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0410 ppm |
| PM2.5 (Fine Particles) | 8.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.8 / 100 |
| Social Vulnerability | 76.0 / 100 |
| Community Resilience | 38.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 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 | - | 111 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 74 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 3.9 in | Coldest |
| February | 30°F (-1°C) | 2.9 in | Driest |
| March | 38°F (4°C) | 4.0 in | |
| April | 49°F (10°C) | 4.1 in | |
| May | 60°F (16°C) | 4.4 in | |
| June | 69°F (21°C) | 5.2 in | Wettest |
| July | 74°F (23°C) | 4.6 in | Warmest |
| August | 73°F (23°C) | 4.3 in | |
| September | 66°F (19°C) | 4.6 in | |
| October | 54°F (12°C) | 4.9 in | |
| November | 44°F (6°C) | 4.0 in | |
| December | 35°F (2°C) | 4.5 in |
Hewitt has a seasonal temperature swing of 45°F / from 29°F in January to 74°F in July. Total annual precipitation is 51.2 inches, with June being the wettest month (5.2") and February the driest (2.9").