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Petersham, MA
Full City Profile · Massachusetts · Franklin County County
3.9
/5.0
B+
Good
252
Population
205/sq mi density
$105,938
Median Income
$55,586 per capita
$372,400
Home Value
$460,669 Zillow
$1,550
Median Rent
20.8% income on rent
47°F
Avg Temperature
246 sunny days/yr
402
Violent Crime/100K
1,115 property/100K
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$105,938 median income, 0.4% unemployment
A+
Affordability
4.7 / 5.0
$372,400 home value, $1,550/mo rent
F
Safety
1.0 / 5.0
402 violent crimes/100K (6% above avg)
A+
Education
4.9 / 5.0
49.1% bachelor's degree or higher
Petersham experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 24°F in January while summers reach 70°F in July. The area gets 246 sunny days per year. Annual precipitation totals 47.7 inches. The area receives 60.4 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
24°F Jan (-5°C)
70°F Jul (21°C)
| Annual Average | 47.2°F |
| 13% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 1,098 ft (335 m) |
| Area | 1.2 sq mi (3.2 km²) |
| Population Density | 205/sq mi |
| Coordinates | 42.4910°N, 72.1872°W |
| Timezone | America/New_York |
| County | Franklin County County |
| Nearest Airport | Worcester Regional (ORH) 22 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0398 ppm |
| PM2.5 (Fine Particles) | 8.1 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 60.7 / 100 |
| Social Vulnerability | 33.0 / 100 |
| Community Resilience | 93.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 3.4 in | |
| February | 23°F (-5°C) | 3.0 in | Coldest, Driest |
| March | 32°F (-0°C) | 3.5 in | |
| April | 43°F (6°C) | 3.7 in | |
| May | 54°F (12°C) | 4.0 in | Wettest |
| June | 63°F (17°C) | 3.9 in | |
| July | 70°F (21°C) | 3.8 in | Warmest |
| August | 68°F (20°C) | 3.9 in | |
| September | 60°F (16°C) | 3.5 in | |
| October | 50°F (10°C) | 3.6 in | |
| November | 40°F (4°C) | 3.9 in | |
| December | 29°F (-2°C) | 3.7 in |
Petersham has a seasonal temperature swing of 48°F / from 23°F in February to 70°F in July. Total annual precipitation is 43.9 inches, with May being the wettest month (4.0") and February the driest (3.0").