All Countries
Califon, NJ
Full City Profile · New Jersey · Hunterdon County County
4.3
/5.0
A
Great
1,065
Population
1,109/sq mi density
$130,938
Median Income
$60,829 per capita
$416,900
Home Value
$727,569 Zillow
$1,438
Median Rent
42.8% income on rent
52°F
Avg Temperature
271 sunny days/yr
A
Overall
4.3 / 5.0
Strong
A+
Economy
4.9 / 5.0
$130,938 median income, 2.8% unemployment
A+
Affordability
4.9 / 5.0
$416,900 home value, $1,438/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
A+
Education
5.0 / 5.0
58.9% bachelor's degree or higher
Califon experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 29°F in January while summers reach 75°F in July. The area gets 271 sunny days per year. Annual precipitation totals 50.9 inches. The area receives 27.1 inches of snow annually. Air quality is rated Good with a median AQI of 39.
Temperature
29°F Jan (-2°C)
75°F Jul (24°C)
| Annual Average | 52.1°F |
| 4% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 271 days/yr |
Geography
| Elevation | 478 ft (146 m) |
| Area | 1.0 sq mi (2.5 km²) |
| Population Density | 1,109/sq mi |
| Coordinates | 40.7195°N, 74.8369°W |
| Timezone | America/New_York |
| County | Hunterdon County County |
| Nearest Airport | Central Jersey Regional (JVI) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
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 | — | — | 7 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 107 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 3.7 in | |
| February | 29°F (-2°C) | 3.1 in | Coldest, Driest |
| March | 37°F (3°C) | 3.9 in | |
| April | 48°F (9°C) | 4.2 in | |
| May | 58°F (15°C) | 4.7 in | |
| June | 66°F (19°C) | 4.3 in | |
| July | 75°F (24°C) | 4.8 in | Warmest, Wettest |
| August | 70°F (21°C) | 4.5 in | |
| September | 63°F (17°C) | 4.4 in | |
| October | 52°F (11°C) | 3.8 in | |
| November | 42°F (6°C) | 4.2 in | |
| December | 32°F (-0°C) | 3.8 in |
Califon has a seasonal temperature swing of 46°F / from 29°F in February to 75°F in July. Total annual precipitation is 49.3 inches, with July being the wettest month (4.8") and February the driest (3.1").