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Granby, MA
Full City Profile · Massachusetts · Hampshire County County
4.0
/5.0
A
Great
1,127
Population
324/sq mi density
$126,136
Median Income
$54,820 per capita
$299,700
Home Value
$385,920 Zillow
48°F
Avg Temperature
246 sunny days/yr
142
Violent Crime/100K
330 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
4.8 / 5.0
$126,136 median income, 3.5% unemployment
A+
Affordability
5.0 / 5.0
$299,700 home value, /mo rent
F
Safety
1.0 / 5.0
142 violent crimes/100K
A+
Education
5.0 / 5.0
50.6% bachelor's degree or higher
Granby experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 24°F in January while summers reach 72°F in July. The area gets 246 sunny days per year. Annual precipitation totals 46.6 inches. The area receives 36.5 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
24°F Jan (-5°C)
72°F Jul (22°C)
| Annual Average | 48.2°F |
| 11% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 246 days/yr |
Geography
| Elevation | 259 ft (79 m) |
| Area | 3.5 sq mi (9.0 km²) |
| Population Density | 324/sq mi |
| Coordinates | 42.2660°N, 72.5289°W |
| Timezone | America/New_York |
| County | Hampshire County County |
| Nearest Airport | Westfield-Barnes Regional (BAF) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0429 ppm |
| NO₂ (Nitrogen Dioxide) | 2.6 ppb |
| SO₂ (Sulfur Dioxide) | 0.24 ppb |
| PM2.5 (Fine Particles) | 5.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 69.9 / 100 |
| Social Vulnerability | 12.8 / 100 |
| Community Resilience | 94.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| 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 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) | 3.5 in | Coldest |
| February | 26°F (-4°C) | 3.1 in | Driest |
| March | 35°F (2°C) | 3.6 in | |
| April | 46°F (8°C) | 3.9 in | |
| May | 58°F (14°C) | 4.1 in | Wettest |
| June | 66°F (19°C) | 3.9 in | |
| July | 72°F (22°C) | 3.7 in | Warmest |
| August | 70°F (21°C) | 3.9 in | |
| September | 62°F (17°C) | 3.8 in | |
| October | 51°F (10°C) | 3.8 in | |
| November | 41°F (5°C) | 4.0 in | |
| December | 30°F (-1°C) | 3.8 in |
Granby has a seasonal temperature swing of 48°F / from 24°F in January to 72°F in July. Total annual precipitation is 45.0 inches, with May being the wettest month (4.1") and February the driest (3.1").