Morris Plains, NJ
Full City Profile · New Jersey · Morris County County
3.7
/5.0
B+
Good
6,214
Population
2,437/sq mi density
$149,623
Median Income
$75,940 per capita
$609,700
Home Value
$731,679 Zillow
$2,686
Median Rent
26.0% income on rent
53°F
Avg Temperature
59
Violent Crime/100K
1,143 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$149,623 median income, 4.4% unemployment
A
Affordability
4.4 / 5.0
$609,700 home value, $2,686/mo rent
F
Safety
1.0 / 5.0
59 violent crimes/100K
A+
Education
5.0 / 5.0
68.8% bachelor's degree or higher
Morris Plains experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 31°F in January while summers reach 76°F in July. Annual precipitation totals 44.9 inches. The area receives 24.0 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
31°F Jan (-1°C)
76°F Jul (24°C)
| Annual Average | 53.1°F |
| 2% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 421 ft (128 m) |
| Area | 2.6 sq mi (6.7 km²) |
| Population Density | 2,437/sq mi |
| Coordinates | 40.8388°N, 74.4742°W |
| Timezone | America/New_York |
| County | Morris County County |
| Nearest Airport | Newark Liberty International (EWR) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
| Good Days % | 83.3% |
| Unhealthy Days | 2 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0448 ppm |
| NO₂ (Nitrogen Dioxide) | 5.1 ppb |
| SO₂ (Sulfur Dioxide) | 0.82 ppb |
| PM2.5 (Fine Particles) | 6.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 89.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Avalanche | 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 | - | 116 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 39 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 131 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 3.0 in | Coldest |
| February | 33°F (0°C) | 2.6 in | Driest |
| March | 40°F (5°C) | 4.1 in | |
| April | 51°F (11°C) | 3.7 in | |
| May | 62°F (16°C) | 3.4 in | |
| June | 70°F (21°C) | 4.3 in | |
| July | 76°F (24°C) | 4.3 in | Warmest |
| August | 74°F (23°C) | 4.5 in | Wettest |
| September | 66°F (19°C) | 3.7 in | |
| October | 55°F (13°C) | 4.0 in | |
| November | 44°F (7°C) | 3.3 in | |
| December | 35°F (2°C) | 4.0 in |
Morris Plains has a seasonal temperature swing of 45°F / from 31°F in January to 76°F in July. Total annual precipitation is 44.9 inches, with August being the wettest month (4.5") and February the driest (2.6").