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Marshfield, MA
Full City Profile · Massachusetts · Essex County County
3.4
/5.0
B
Good
4,698
Population
930/sq mi density
$99,537
Median Income
$54,172 per capita
$646,400
Home Value
$775,204 Zillow
$1,398
Median Rent
32.8% income on rent
51°F
Avg Temperature
259 sunny days/yr
124
Violent Crime/100K
275 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$99,537 median income, 3.6% unemployment
B
Affordability
3.0 / 5.0
$646,400 home value, $1,398/mo rent
F
Safety
1.0 / 5.0
124 violent crimes/100K
A+
Education
4.9 / 5.0
49.0% bachelor's degree or higher
Marshfield experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 30°F in January while summers reach 73°F in July. The area gets 259 sunny days per year. Annual precipitation totals 52.3 inches. The area receives 50.9 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
30°F Jan (-1°C)
73°F Jul (23°C)
| Annual Average | 51.3°F |
| 5% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 259 days/yr |
Geography
| Elevation | 7 ft (2 m) |
| Area | 5.1 sq mi (13.3 km²) |
| Population Density | 930/sq mi |
| Coordinates | 42.1022°N, 70.6894°W |
| Timezone | America/New_York |
| County | Essex County County |
| Nearest Airport | General Edward Lawrence Logan International (BOS) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0421 ppm |
| NO₂ (Nitrogen Dioxide) | 8.1 ppb |
| PM2.5 (Fine Particles) | 7.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.6 / 100 |
| Social Vulnerability | 34.2 / 100 |
| Community Resilience | 95.6 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively High |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 4.3 in | Coldest |
| February | 30°F (-1°C) | 3.8 in | |
| March | 37°F (3°C) | 4.5 in | |
| April | 47°F (8°C) | 4.2 in | |
| May | 57°F (14°C) | 3.5 in | |
| June | 66°F (19°C) | 3.5 in | |
| July | 73°F (23°C) | 3.3 in | Warmest, Driest |
| August | 70°F (21°C) | 3.8 in | |
| September | 63°F (17°C) | 4.2 in | |
| October | 52°F (11°C) | 4.1 in | |
| November | 44°F (6°C) | 4.6 in | Wettest |
| December | 34°F (1°C) | 4.4 in |
Marshfield has a seasonal temperature swing of 43°F / from 30°F in January to 73°F in July. Total annual precipitation is 48.1 inches, with November being the wettest month (4.6") and July the driest (3.3").