Jamesport, NY
Full City Profile · New York · Suffolk County County
4.1
/5.0
A
Great
1,538
Population
342/sq mi density
$105,282
Median Income
$82,694 per capita
$651,900
Home Value
$1,008,524 Zillow
50°F
Avg Temperature
A
Overall
4.1 / 5.0
Strong
A+
Economy
5.0 / 5.0
$105,282 median income, 0.0% unemployment
B
Affordability
3.2 / 5.0
$651,900 home value, /mo rent
A
Education
4.0 / 5.0
37.5% bachelor's degree or higher
Jamesport experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 29°F in January while summers reach 72°F in July. Annual precipitation totals 43.5 inches. The area receives 26.8 inches of snow annually. Air quality is rated Good with a median AQI of 38.
Temperature
29°F Jan (-1°C)
72°F Jul (22°C)
| Annual Average | 50.2°F |
| 7% below US avg | |
| January Average | 29°F (-1°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 29 ft (9 m) |
| Area | 4.5 sq mi (11.7 km²) |
| Population Density | 342/sq mi |
| Coordinates | 40.9610°N, 72.5832°W |
| Timezone | America/New_York |
| County | Suffolk County County |
| Nearest Airport | John F Kennedy International (JFK) 66 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 38.0 |
| Rating | Good |
| Good Days % | 79.5% |
| Unhealthy Days | 6 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0454 ppm |
| NO₂ (Nitrogen Dioxide) | 5.8 ppb |
| CO (Carbon Monoxide) | 0.19 ppm |
| PM2.5 (Fine Particles) | 7.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.3 / 100 |
| Social Vulnerability | 21.6 / 100 |
| Community Resilience | 94.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Very High |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 0.3 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1964 | LONG ISLAND, NY | Meteorological | 0.3 m | - | 47 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-1°C) | 3.2 in | Coldest |
| February | 31°F (-1°C) | 2.7 in | Driest |
| March | 37°F (3°C) | 4.3 in | |
| April | 46°F (8°C) | 3.8 in | |
| May | 56°F (13°C) | 3.3 in | |
| June | 66°F (19°C) | 3.5 in | |
| July | 72°F (22°C) | 2.9 in | Warmest |
| August | 71°F (22°C) | 3.7 in | |
| September | 64°F (18°C) | 3.8 in | |
| October | 53°F (12°C) | 4.7 in | Wettest |
| November | 44°F (6°C) | 3.5 in | |
| December | 35°F (2°C) | 4.2 in |
Jamesport has a seasonal temperature swing of 43°F / from 29°F in January to 72°F in July. Total annual precipitation is 43.5 inches, with October being the wettest month (4.7") and February the driest (2.7").