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Timonium, MD
Full City Profile · Maryland · Baltimore County County
3.9
/5.0
B+
Good
10,880
Population
1,902/sq mi density
$130,732
Median Income
$63,219 per capita
$478,800
Home Value
$468,253 Zillow
$1,790
Median Rent
33.8% income on rent
56°F
Avg Temperature
297 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
4.9 / 5.0
$130,732 median income, 2.6% unemployment
A+
Affordability
4.6 / 5.0
$478,800 home value, $1,790/mo rent
F
Safety
1.0 / 5.0
1,339 violent crimes/100K (252% above avg)
A+
Education
5.0 / 5.0
63.0% bachelor's degree or higher
Timonium enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 35°F in January while summers reach 78°F in July. The area gets 297 sunny days per year. Air quality is rated Good with a median AQI of 41.
Temperature
35°F Jan (1°C)
78°F Jul (26°C)
| Annual Average | 56.1°F |
| 4% above US avg | |
| January Average | 35°F (1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 297 days/yr |
Geography
| Elevation | 322 ft (98 m) |
| Area | 5.4 sq mi (13.9 km²) |
| Population Density | 1,902/sq mi |
| Coordinates | 39.4457°N, 76.6008°W |
| Timezone | America/New_York |
| County | Baltimore County County |
| Nearest Airport | Baltimore/Washington International Thurgood Marshall (BWI) 19 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 | — | — | 126 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (1°C) | 3.4 in | Coldest |
| February | 35°F (1°C) | 3.0 in | Driest |
| March | 43°F (6°C) | 3.9 in | |
| April | 53°F (12°C) | 3.5 in | |
| May | 63°F (17°C) | 4.5 in | Wettest |
| June | 72°F (22°C) | 3.9 in | |
| July | 78°F (26°C) | 4.1 in | Warmest |
| August | 75°F (24°C) | 4.1 in | |
| September | 68°F (20°C) | 4.0 in | |
| October | 57°F (14°C) | 3.3 in | |
| November | 47°F (8°C) | 3.7 in | |
| December | 37°F (3°C) | 3.6 in |
Timonium has a seasonal temperature swing of 43°F / from 35°F in January to 78°F in July. Total annual precipitation is 44.8 inches, with May being the wettest month (4.5") and February the driest (3.0").