Mount Royal, PA
Full City Profile · Pennsylvania · Dauphin County County
3.8
/5.0
B+
Good
323
Population
363/sq mi density
$81,653
Median Income
$40,676 per capita
$191,100
Home Value
$288,065 Zillow
52°F
Avg Temperature
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$81,653 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$191,100 home value, /mo rent
D
Education
1.7 / 5.0
9.1% bachelor's degree or higher
Mount Royal experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 74°F in July. Annual precipitation totals 42.1 inches. The area receives 29.9 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
30°F Jan (-1°C)
74°F Jul (23°C)
| Annual Average | 52.4°F |
| 3% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 447 ft (136 m) |
| Area | 0.9 sq mi (2.3 km²) |
| Population Density | 363/sq mi |
| Coordinates | 40.0380°N, 76.8870°W |
| Timezone | America/New_York |
| County | Dauphin County County |
| Nearest Airport | Harrisburg International (MDT) 13 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
| Good Days % | 56.3% |
| Unhealthy Days | 2 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0450 ppm |
| PM2.5 (Fine Particles) | 10.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.1 / 100 |
| Social Vulnerability | 37.9 / 100 |
| Community Resilience | 96.6 / 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 Low |
| Cold Wave | Relatively Moderate |
| 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 | - | - | 146 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.6 in | Coldest |
| February | 32°F (0°C) | 2.5 in | Driest |
| March | 40°F (5°C) | 3.7 in | |
| April | 51°F (11°C) | 3.4 in | |
| May | 61°F (16°C) | 4.2 in | |
| June | 70°F (21°C) | 3.2 in | |
| July | 74°F (23°C) | 4.3 in | Warmest |
| August | 72°F (22°C) | 3.8 in | |
| September | 65°F (19°C) | 4.8 in | Wettest |
| October | 54°F (12°C) | 3.6 in | |
| November | 44°F (6°C) | 3.1 in | |
| December | 35°F (1°C) | 3.1 in |
Mount Royal has a seasonal temperature swing of 44°F / from 30°F in January to 74°F in July. Total annual precipitation is 42.1 inches, with September being the wettest month (4.8") and February the driest (2.5").