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South Lancaster, MA
Full City Profile · Massachusetts · Worcester County County
3.6
/5.0
B+
Good
1,991
Population
1,497/sq mi density
$104,745
Median Income
$42,658 per capita
$370,200
Home Value
$438,474 Zillow
48°F
Avg Temperature
246 sunny days/yr
44
Violent Crime/100K
364 property/100K
B+
Overall
3.6 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$104,745 median income, 11.2% unemployment
A+
Affordability
4.7 / 5.0
$370,200 home value, /mo rent
F
Safety
1.0 / 5.0
44 violent crimes/100K
A+
Education
5.0 / 5.0
64.6% bachelor's degree or higher
South Lancaster experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 25°F in January while summers reach 71°F in July. The area gets 246 sunny days per year. Annual precipitation totals 48.3 inches. The area receives 72.9 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
25°F Jan (-4°C)
71°F Jul (22°C)
| Annual Average | 48.1°F |
| 11% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 299 ft (91 m) |
| Area | 1.3 sq mi (3.4 km²) |
| Population Density | 1,497/sq mi |
| Coordinates | 42.4370°N, 71.6971°W |
| Timezone | America/New_York |
| County | Worcester County County |
| Nearest Airport | Worcester Regional (ORH) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0392 ppm |
| NO₂ (Nitrogen Dioxide) | 14.1 ppb |
| SO₂ (Sulfur Dioxide) | 0.41 ppb |
| CO (Carbon Monoxide) | 0.29 ppm |
| PM2.5 (Fine Particles) | 7.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.5 / 100 |
| Social Vulnerability | 22.0 / 100 |
| Community Resilience | 85.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 25°F (-4°C) | 3.7 in | |
| February | 24°F (-4°C) | 3.4 in | Coldest, Driest |
| March | 33°F (1°C) | 3.9 in | |
| April | 44°F (7°C) | 4.0 in | |
| May | 55°F (13°C) | 3.9 in | |
| June | 64°F (18°C) | 3.9 in | |
| July | 71°F (22°C) | 3.9 in | Warmest |
| August | 69°F (21°C) | 4.0 in | |
| September | 61°F (16°C) | 3.7 in | |
| October | 50°F (10°C) | 4.0 in | |
| November | 41°F (5°C) | 4.5 in | Wettest |
| December | 30°F (-1°C) | 4.0 in |
South Lancaster has a seasonal temperature swing of 47°F / from 24°F in February to 71°F in July. Total annual precipitation is 46.8 inches, with November being the wettest month (4.5") and February the driest (3.4").