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Grand Isle, ME
Full City Profile · Maine · Aroostook County County
2.7
/5.0
C+
Fair
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
249 sunny days/yr
128
Violent Crime/100K
996 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.8 / 5.0
$36,000 median income, 8.1% unemployment
A+
Affordability
5.0 / 5.0
$75,000 home value, $510/mo rent
F
Safety
1.0 / 5.0
128 violent crimes/100K
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. The area gets 249 sunny days per year. Annual precipitation totals 32.9 inches. Air quality is rated Good with a median AQI of 34.
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) |
| Sunny Days | 249 days/yr |
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 | 34.0 |
| Rating | Good |
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) | 3.4 in | |
| February | 10°F (-12°C) | 2.6 in | Coldest, Driest |
| March | 22°F (-6°C) | 2.8 in | |
| April | 36°F (2°C) | 2.7 in | |
| May | 49°F (10°C) | 3.4 in | |
| June | 59°F (15°C) | 3.5 in | |
| July | 66°F (19°C) | 4.4 in | Warmest, Wettest |
| August | 62°F (17°C) | 4.1 in | |
| September | 53°F (12°C) | 3.6 in | |
| October | 42°F (6°C) | 3.7 in | |
| November | 31°F (-1°C) | 3.7 in | |
| December | 15°F (-9°C) | 3.8 in |
Grand Isle has a seasonal temperature swing of 56°F / from 10°F in February to 66°F in July. Total annual precipitation is 41.6 inches, with July being the wettest month (4.4") and February the driest (2.6").