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Greenwich, CT
Full City Profile · Connecticut · Westchester County County
2.9
/5.0
C+
Fair
14,528
Population
3,002/sq mi density
$136,154
Median Income
$119,966 per capita
$1,486,100
Home Value
$2,195,451 Zillow
$2,121
Median Rent
29.0% income on rent
52°F
Avg Temperature
275 sunny days/yr
35
Violent Crime/100K
749 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$136,154 median income, 4.9% unemployment
F
Affordability
1.0 / 5.0
$1,486,100 home value, $2,121/mo rent
F
Safety
1.0 / 5.0
35 violent crimes/100K
A+
Education
5.0 / 5.0
70.2% bachelor's degree or higher
Greenwich experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 30°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 47.8 inches. Air quality is rated Good with a median AQI of 39.
Temperature
30°F Jan (-1°C)
74°F Jul (23°C)
| Annual Average | 52.0°F |
| 4% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 101 ft (31 m) |
| Area | 4.4 sq mi (11.5 km²) |
| Population Density | 3,002/sq mi |
| Coordinates | 41.0278°N, 73.6269°W |
| Timezone | America/New_York |
| County | Westchester County County |
| Nearest Airport | Laguardia (LGA) 22 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0418 ppm |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.2 / 100 |
| Social Vulnerability | 47.4 / 100 |
| Community Resilience | 77.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
| Coastal Flood | Relatively Moderate |
| Avalanche | Very Low |
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 | — | 51 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 113 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.9 in | Coldest |
| February | 31°F (-1°C) | 3.2 in | Driest |
| March | 39°F (4°C) | 4.3 in | |
| April | 49°F (9°C) | 4.4 in | |
| May | 59°F (15°C) | 4.6 in | Wettest |
| June | 68°F (20°C) | 3.9 in | |
| July | 74°F (23°C) | 3.9 in | Warmest |
| August | 72°F (22°C) | 4.2 in | |
| September | 64°F (18°C) | 4.3 in | |
| October | 53°F (12°C) | 4.0 in | |
| November | 44°F (7°C) | 4.3 in | |
| December | 34°F (1°C) | 4.0 in |
Greenwich has a seasonal temperature swing of 44°F / from 30°F in January to 74°F in July. Total annual precipitation is 48.8 inches, with May being the wettest month (4.6") and February the driest (3.2").