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Syosset, NY
Full City Profile · New York · Nassau County County
3.8
/5.0
B+
Good
18,274
Population
3,669/sq mi density
$187,936
Median Income
$77,458 per capita
$854,500
Home Value
$1,065,910 Zillow
$3,066
Median Rent
35.9% income on rent
56°F
Avg Temperature
275 sunny days/yr
22
Violent Crime/100K
356 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$187,936 median income, 2.4% unemployment
A
Affordability
4.1 / 5.0
$854,500 home value, $3,066/mo rent
F
Safety
1.0 / 5.0
22 violent crimes/100K
A+
Education
5.0 / 5.0
70.1% bachelor's degree or higher
Syosset enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 34°F in January while summers reach 77°F in July. The area gets 275 sunny days per year. Annual precipitation totals 45.3 inches. The area receives 18.5 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
34°F Jan (1°C)
77°F Jul (25°C)
| Annual Average | 55.5°F |
| 3% above US avg | |
| January Average | 34°F (1°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 200 ft (61 m) |
| Area | 5.0 sq mi (12.9 km²) |
| Population Density | 3,669/sq mi |
| Coordinates | 40.8157°N, 73.5020°W |
| Timezone | America/New_York |
| County | Nassau County County |
| Nearest Airport | John F Kennedy International (JFK) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.1 / 100 |
| Social Vulnerability | 25.9 / 100 |
| Community Resilience | 97.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very 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
2 tsunamis 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 | — | 34 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 118 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 34°F (1°C) | 3.2 in | |
| February | 32°F (0°C) | 3.1 in | Coldest |
| March | 41°F (5°C) | 4.2 in | |
| April | 50°F (10°C) | 3.6 in | |
| May | 60°F (16°C) | 3.7 in | |
| June | 69°F (21°C) | 2.8 in | Driest |
| July | 77°F (25°C) | 3.5 in | Warmest |
| August | 74°F (23°C) | 4.4 in | Wettest |
| September | 66°F (19°C) | 3.3 in | |
| October | 55°F (13°C) | 3.3 in | |
| November | 46°F (8°C) | 3.8 in | |
| December | 36°F (2°C) | 3.7 in |
Syosset has a seasonal temperature swing of 45°F / from 32°F in February to 77°F in July. Total annual precipitation is 42.5 inches, with August being the wettest month (4.4") and June the driest (2.8").