Grand Isle, ME
Full City Profile · Maine · Aroostook County County
3.2
/5.0
B
Good
244
Population
394/sq mi density
$36,000
Median Income
$33,382 per capita
$75,000
Home Value
$144,334 Zillow
$510
Median Rent
30.2% income on rent
40°F
Avg Temperature
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
C+
Economy
2.5 / 5.0
$36,000 median income, 17.6% unemployment
A+
Affordability
5.0 / 5.0
$75,000 home value, $510/mo rent
C
Education
2.1 / 5.0
13.4% bachelor's degree or higher
Grand Isle has a cool climate with an average annual temperature of 40°F (4°C). Winters average 11°F in January while summers reach 66°F in July. Annual precipitation totals 32.9 inches. The area receives 96.7 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
11°F Jan (-12°C)
66°F Jul (19°C)
| Annual Average | 40.1°F |
| 26% below US avg | |
| January Average | 11°F (-12°C) |
| July Average | 66°F (19°C) |
Geography
| Elevation | 544 ft (166 m) |
| Area | 0.7 sq mi (1.8 km²) |
| Population Density | 394/sq mi |
| Coordinates | 47.3074°N, 68.1587°W |
| Timezone | America/New_York |
| County | Aroostook County County |
| Nearest Airport | Northern Aroostook Regional (WFK) 7 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
| Good Days % | 81.7% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0325 ppm |
| NO₂ (Nitrogen Dioxide) | 3.0 ppb |
| SO₂ (Sulfur Dioxide) | 0.05 ppb |
| CO (Carbon Monoxide) | 0.19 ppm |
| PM2.5 (Fine Particles) | 5.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 80.4 / 100 |
| Social Vulnerability | 67.6 / 100 |
| Community Resilience | 51.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Very High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 11°F (-12°C) | 1.5 in | Coldest |
| February | 14°F (-10°C) | 0.9 in | Driest |
| March | 25°F (-4°C) | 1.5 in | |
| April | 38°F (3°C) | 2.4 in | |
| May | 52°F (11°C) | 3.1 in | |
| June | 61°F (16°C) | 4.2 in | Wettest |
| July | 66°F (19°C) | 3.9 in | Warmest |
| August | 65°F (18°C) | 3.8 in | |
| September | 56°F (13°C) | 3.5 in | |
| October | 44°F (7°C) | 3.5 in | |
| November | 32°F (-0°C) | 2.6 in | |
| December | 19°F (-7°C) | 2.3 in |
Grand Isle has a seasonal temperature swing of 55°F / from 11°F in January to 66°F in July. Total annual precipitation is 32.9 inches, with June being the wettest month (4.2") and February the driest (0.9").