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Norwalk, CT
Full City Profile · Connecticut · Greater Bridgeport Planning Region County
3.5
/5.0
B+
Good
91,375
Population
3,992/sq mi density
$105,301
Median Income
$59,700 per capita
$535,000
Home Value
$639,076 Zillow
$2,010
Median Rent
29.3% income on rent
55°F
Avg Temperature
276 sunny days/yr
205
Violent Crime/100K
1,394 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$105,301 median income, 4.1% unemployment
B+
Affordability
3.8 / 5.0
$535,000 home value, $2,010/mo rent
F
Safety
1.0 / 5.0
205 violent crimes/100K
A+
Education
4.6 / 5.0
44.6% bachelor's degree or higher
Norwalk experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 40°F in January while summers reach 75°F in July. The area gets 276 sunny days per year. Annual precipitation totals 58.7 inches. The area receives 12.9 inches of snow annually. Air quality is rated Good with a median AQI of 39.
Temperature
40°F Jan (4°C)
75°F Jul (24°C)
| Annual Average | 54.5°F |
| 1% above US avg | |
| January Average | 40°F (4°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 20 ft (6 m) |
| Area | 36.4 sq mi (94.1 km²) |
| Population Density | 3,992/sq mi |
| Coordinates | 41.0927°N, 73.4198°W |
| Timezone | America/New_York |
| County | Greater Bridgeport Planning Region County |
| Nearest Airport | Laguardia (LGA) 32 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.8 / 100 |
| Social Vulnerability | 45.3 / 100 |
| Community Resilience | 59.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively High |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively Low |
| Landslide | Very 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 | — | 42 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 132 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°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 | 75°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 |
Norwalk has a seasonal temperature swing of 44°F / from 31°F in February to 75°F in July. Total annual precipitation is 48.2 inches, with May being the wettest month (4.5") and February the driest (3.2").