Belfast, PA
Full City Profile · Pennsylvania · Northampton County County
3.6
/5.0
B+
Good
1,239
Population
1,007/sq mi density
$73,036
Median Income
$32,926 per capita
$264,400
Home Value
$424,236 Zillow
52°F
Avg Temperature
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$73,036 median income, 5.9% unemployment
A+
Affordability
4.6 / 5.0
$264,400 home value, /mo rent
C
Education
2.4 / 5.0
18.0% bachelor's degree or higher
Belfast 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 33.1 inches of snow annually. Air quality is rated Good with a median AQI of 39.
Temperature
30°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 52.1°F |
| 4% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 580 ft (177 m) |
| Area | 1.1 sq mi (2.9 km²) |
| Population Density | 1,007/sq mi |
| Coordinates | 40.7821°N, 75.2743°W |
| Timezone | America/New_York |
| County | Northampton County County |
| Nearest Airport | Lehigh Valley International (ABE) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
| Good Days % | 76.0% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0445 ppm |
| NO₂ (Nitrogen Dioxide) | 13.3 ppb |
| SO₂ (Sulfur Dioxide) | 0.77 ppb |
| PM2.5 (Fine Particles) | 9.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 90.0 / 100 |
| Social Vulnerability | 30.6 / 100 |
| Community Resilience | 73.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 35 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 109 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.7 in | Coldest |
| February | 31°F (-0°C) | 3.0 in | Driest |
| March | 39°F (4°C) | 3.7 in | |
| April | 51°F (11°C) | 3.9 in | |
| May | 61°F (16°C) | 4.3 in | |
| June | 70°F (21°C) | 4.8 in | |
| July | 75°F (24°C) | 5.6 in | Warmest, Wettest |
| August | 72°F (22°C) | 5.2 in | |
| September | 66°F (19°C) | 4.7 in | |
| October | 54°F (12°C) | 4.5 in | |
| November | 43°F (6°C) | 3.4 in | |
| December | 34°F (1°C) | 4.4 in |
Belfast 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 (5.6") and February the driest (3.0").