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White Marsh, MD
Full City Profile · Maryland · Baltimore County County
3.9
/5.0
B+
Good
10,480
Population
1,974/sq mi density
$123,302
Median Income
$53,412 per capita
$370,100
Home Value
$513,217 Zillow
$1,847
Median Rent
29.4% income on rent
55°F
Avg Temperature
293 sunny days/yr
1,339
Violent Crime/100K
4,718 property/100K
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$123,302 median income, 1.3% unemployment
A+
Affordability
5.0 / 5.0
$370,100 home value, $1,847/mo rent
F
Safety
1.0 / 5.0
1,339 violent crimes/100K (252% above avg)
A+
Education
4.8 / 5.0
47.5% bachelor's degree or higher
White Marsh experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 33°F in January while summers reach 77°F in July. The area gets 293 sunny days per year. Annual precipitation totals 47.1 inches. Air quality is rated Good with a median AQI of 41.
Temperature
33°F Jan (1°C)
77°F Jul (25°C)
| Annual Average | 55.2°F |
| 2% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 79 ft (24 m) |
| Area | 5.3 sq mi (13.8 km²) |
| Population Density | 1,974/sq mi |
| Coordinates | 39.3815°N, 76.4584°W |
| Timezone | America/New_York |
| County | Baltimore County County |
| Nearest Airport | Baltimore/Washington International Thurgood Marshall (BWI) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0492 ppm |
| NO₂ (Nitrogen Dioxide) | 17.2 ppb |
| SO₂ (Sulfur Dioxide) | 0.37 ppb |
| CO (Carbon Monoxide) | 0.28 ppm |
| PM2.5 (Fine Particles) | 9.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 94.0 / 100 |
| Social Vulnerability | 32.0 / 100 |
| Community Resilience | 87.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | Relatively Moderate |
| 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 | - | - | 117 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 3.3 in | Coldest |
| February | 35°F (1°C) | 2.9 in | Driest |
| March | 43°F (6°C) | 3.7 in | |
| April | 53°F (12°C) | 3.6 in | |
| May | 63°F (17°C) | 4.3 in | Wettest |
| June | 72°F (22°C) | 4.0 in | |
| July | 77°F (25°C) | 4.2 in | Warmest |
| August | 75°F (24°C) | 4.2 in | |
| September | 68°F (20°C) | 3.9 in | |
| October | 57°F (14°C) | 3.2 in | |
| November | 47°F (8°C) | 3.7 in | |
| December | 38°F (3°C) | 3.7 in |
White Marsh has a seasonal temperature swing of 44°F / from 33°F in January to 77°F in July. Total annual precipitation is 44.8 inches, with May being the wettest month (4.3") and February the driest (2.9").