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Darien Downtown, CT
Full City Profile · Connecticut · Western Connecticut Planning Region County
3.5
/5.0
B+
Good
1,329
Population
1,682/sq mi density
$166,111
Median Income
$116,342 per capita
$908,200
Home Value
$639,076 Zillow
$2,605
Median Rent
29.5% income on rent
53°F
Avg Temperature
275 sunny days/yr
292
Violent Crime/100K
1,810 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$166,111 median income, 6.0% unemployment
B+
Affordability
3.6 / 5.0
$908,200 home value, $2,605/mo rent
F
Safety
1.0 / 5.0
292 violent crimes/100K
A+
Education
5.0 / 5.0
80.5% bachelor's degree or higher
Darien Downtown experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 31°F in January while summers reach 76°F in July. The area gets 275 sunny days per year. Annual precipitation totals 44.1 inches. The area receives 33.6 inches of snow annually. Air quality is rated Good with a median AQI of 39.
Temperature
31°F Jan (-0°C)
76°F Jul (24°C)
| Annual Average | 53.4°F |
| 1% below US avg | |
| January Average | 31°F (-0°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 50 ft (15 m) |
| Area | 23.5 sq mi (60.8 km²) |
| Population Density | 1,682/sq mi |
| Coordinates | 41.0767°N, 73.4697°W |
| Timezone | America/New_York |
| County | Western Connecticut Planning Region County |
| Nearest Airport | Laguardia (LGA) 30 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.3 / 100 |
| Social Vulnerability | 21.4 / 100 |
| Community Resilience | 62.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Moderate |
| Coastal Flood | Relatively High |
| 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 | — | 44 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 127 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-0°C) | 3.8 in | |
| February | 31°F (-1°C) | 3.2 in | Coldest, Driest |
| March | 39°F (4°C) | 4.3 in | |
| April | 49°F (10°C) | 4.4 in | |
| May | 59°F (15°C) | 4.5 in | Wettest |
| June | 68°F (20°C) | 3.8 in | |
| July | 76°F (24°C) | 3.8 in | Warmest |
| August | 73°F (23°C) | 4.0 in | |
| September | 65°F (18°C) | 4.1 in | |
| October | 54°F (12°C) | 4.0 in | |
| November | 44°F (7°C) | 4.3 in | |
| December | 34°F (1°C) | 4.0 in |
Darien Downtown has a seasonal temperature swing of 45°F / from 31°F in February to 76°F in July. Total annual precipitation is 48.2 inches, with May being the wettest month (4.5") and February the driest (3.2").