Cobb Island, MD
Full City Profile · Maryland · Westmoreland County County
3.7
/5.0
B+
Good
1,162
Population
1,844/sq mi density
$161,141
Median Income
$51,347 per capita
$246,100
Home Value
$369,057 Zillow
55°F
Avg Temperature
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$161,141 median income, 4.6% unemployment
A+
Affordability
5.0 / 5.0
$246,100 home value, /mo rent
D
Education
1.6 / 5.0
7.4% bachelor's degree or higher
Cobb Island experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 35°F in January while summers reach 76°F in July. Annual precipitation totals 48.1 inches. The area receives 15.1 inches of snow annually.
Temperature
35°F Jan (1°C)
76°F Jul (24°C)
| Annual Average | 55.1°F |
| 2% above US avg | |
| January Average | 35°F (1°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 13 ft (4 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 1,844/sq mi |
| Coordinates | 38.2637°N, 76.8490°W |
| Timezone | America/New_York |
| County | Westmoreland County County |
| Nearest Airport | St Mary's County Regional (LTW) 17 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 37.4 / 100 |
| Social Vulnerability | 74.2 / 100 |
| Community Resilience | 61.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (1°C) | 3.3 in | Coldest |
| February | 37°F (3°C) | 3.0 in | Driest |
| March | 44°F (7°C) | 4.2 in | |
| April | 55°F (13°C) | 3.3 in | |
| May | 63°F (17°C) | 4.3 in | |
| June | 71°F (22°C) | 4.2 in | |
| July | 76°F (24°C) | 4.6 in | Warmest |
| August | 74°F (23°C) | 4.8 in | |
| September | 67°F (20°C) | 4.9 in | Wettest |
| October | 56°F (13°C) | 4.2 in | |
| November | 46°F (8°C) | 3.3 in | |
| December | 38°F (4°C) | 4.0 in |
Cobb Island has a seasonal temperature swing of 41°F / from 35°F in January to 76°F in July. Total annual precipitation is 48.1 inches, with September being the wettest month (4.9") and February the driest (3.0").