Washington Boro, PA
Full City Profile · Pennsylvania · Lancaster County County
4.0
/5.0
A
Great
655
Population
339/sq mi density
$98,750
Median Income
$43,780 per capita
$241,800
Home Value
$286,576 Zillow
55°F
Avg Temperature
A
Overall
4.0 / 5.0
Strong
A+
Economy
4.9 / 5.0
$98,750 median income, 2.5% unemployment
A+
Affordability
5.0 / 5.0
$241,800 home value, /mo rent
C
Education
2.0 / 5.0
12.9% bachelor's degree or higher
Washington Boro experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 32°F in January while summers reach 77°F in July. Annual precipitation totals 46.3 inches. The area receives 21.3 inches of snow annually. Air quality is rated Moderate with a median AQI of 50.
Temperature
32°F Jan (0°C)
77°F Jul (25°C)
| Annual Average | 54.6°F |
| 1% above US avg | |
| January Average | 32°F (0°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 331 ft (101 m) |
| Area | 1.9 sq mi (5.0 km²) |
| Population Density | 339/sq mi |
| Coordinates | 40.0066°N, 76.4690°W |
| Timezone | America/New_York |
| County | Lancaster County County |
| Nearest Airport | Harrisburg International (MDT) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 50.0 |
| Rating | Good |
| Good Days % | 51.6% |
| Unhealthy Days | 3 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0450 ppm |
| PM2.5 (Fine Particles) | 11.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.0 / 100 |
| Social Vulnerability | 43.5 / 100 |
| Community Resilience | 70.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 111 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 3.3 in | Coldest |
| February | 34°F (1°C) | 2.7 in | Driest |
| March | 41°F (5°C) | 4.1 in | |
| April | 53°F (12°C) | 3.5 in | |
| May | 63°F (17°C) | 3.9 in | |
| June | 73°F (23°C) | 4.6 in | |
| July | 77°F (25°C) | 4.3 in | Warmest |
| August | 75°F (24°C) | 3.6 in | |
| September | 68°F (20°C) | 4.9 in | Wettest |
| October | 57°F (14°C) | 4.4 in | |
| November | 46°F (8°C) | 3.4 in | |
| December | 37°F (3°C) | 3.8 in |
Washington Boro has a seasonal temperature swing of 45°F / from 32°F in January to 77°F in July. Total annual precipitation is 46.3 inches, with September being the wettest month (4.9") and February the driest (2.7").