Mount Aetna, MD
Full City Profile · Maryland · Washington County County
4.8
/5.0
A+
Excellent
581
Population
412/sq mi density
$120,417
Median Income
$49,915 per capita
$457,100
Home Value
$497,829 Zillow
$1,184
Median Rent
13.7% income on rent
52°F
Avg Temperature
A+
Overall
4.8 / 5.0
Strong
A+
Economy
4.9 / 5.0
$120,417 median income, 1.1% unemployment
A+
Affordability
4.5 / 5.0
$457,100 home value, $1,184/mo rent
A+
Education
5.0 / 5.0
62.6% bachelor's degree or higher
Mount Aetna 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 35.6 inches. The area receives 27.5 inches of snow annually. Air quality is rated Good with a median AQI of 40.
Temperature
30°F Jan (-1°C)
74°F Jul (23°C)
| Annual Average | 52.3°F |
| 3% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 591 ft (180 m) |
| Area | 1.4 sq mi (3.7 km²) |
| Population Density | 412/sq mi |
| Coordinates | 39.5989°N, 77.6128°W |
| Timezone | America/New_York |
| County | Washington County County |
| Nearest Airport | Hagerstown Regional/Richard A Henson Field (HGR) 10 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 40.0 |
| Rating | Good |
| Good Days % | 79.3% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0452 ppm |
| PM2.5 (Fine Particles) | 6.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 68.8 / 100 |
| Social Vulnerability | 44.6 / 100 |
| Community Resilience | 73.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.5 in | Coldest |
| February | 32°F (0°C) | 2.0 in | Driest |
| March | 40°F (4°C) | 3.0 in | |
| April | 51°F (11°C) | 3.3 in | |
| May | 61°F (16°C) | 3.6 in | |
| June | 70°F (21°C) | 3.4 in | |
| July | 74°F (23°C) | 2.9 in | Warmest |
| August | 72°F (22°C) | 2.9 in | |
| September | 65°F (19°C) | 3.8 in | Wettest |
| October | 54°F (12°C) | 2.8 in | |
| November | 43°F (6°C) | 2.6 in | |
| December | 35°F (1°C) | 2.8 in |
Mount Aetna has a seasonal temperature swing of 44°F / from 30°F in January to 74°F in July. Total annual precipitation is 35.6 inches, with September being the wettest month (3.8") and February the driest (2.0").