Chatham, MA
Full City Profile · Massachusetts · Barnstable County County
2.6
/5.0
C+
Fair
1,614
Population
611/sq mi density
$82,269
Median Income
$91,777 per capita
$1,550,000
Home Value
$1,329,498 Zillow
$924
Median Rent
32.9% income on rent
51°F
Avg Temperature
175
Violent Crime/100K
511 property/100K
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$82,269 median income, 8.5% unemployment
F
Affordability
1.0 / 5.0
$1,550,000 home value, $924/mo rent
F
Safety
1.0 / 5.0
175 violent crimes/100K
A+
Education
5.0 / 5.0
60.4% bachelor's degree or higher
Chatham experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 32°F in January while summers reach 71°F in July. Annual precipitation totals 45.2 inches. The area receives 24.5 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
32°F Jan (0°C)
71°F Jul (22°C)
| Annual Average | 50.9°F |
| 6% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 71°F (22°C) |
Geography
| Elevation | 35 ft (11 m) |
| Area | 2.6 sq mi (6.8 km²) |
| Population Density | 611/sq mi |
| Coordinates | 41.6739°N, 69.9630°W |
| Timezone | America/New_York |
| County | Barnstable County County |
| Nearest Airport | New Bedford Regional (EWB) 51 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
| Good Days % | 94.3% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0435 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.1 / 100 |
| Social Vulnerability | 34.5 / 100 |
| Community Resilience | 99.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively High |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 3.8 in | Coldest |
| February | 33°F (0°C) | 3.6 in | |
| March | 38°F (3°C) | 4.4 in | |
| April | 46°F (8°C) | 4.0 in | |
| May | 55°F (13°C) | 3.3 in | |
| June | 64°F (18°C) | 3.0 in | |
| July | 71°F (22°C) | 2.8 in | Warmest, Driest |
| August | 71°F (21°C) | 3.0 in | |
| September | 64°F (18°C) | 3.6 in | |
| October | 54°F (12°C) | 4.2 in | |
| November | 45°F (7°C) | 4.5 in | |
| December | 37°F (3°C) | 5.0 in | Wettest |
Chatham has a seasonal temperature swing of 39°F / from 32°F in January to 71°F in July. Total annual precipitation is 45.2 inches, with December being the wettest month (5.0") and July the driest (2.8").