All Countries
Westerly, RI
Full City Profile · Rhode Island · Washington County County
3.4
/5.0
B
Good
18,528
Population
1,170/sq mi density
$82,333
Median Income
$47,826 per capita
$400,200
Home Value
$601,250 Zillow
$1,243
Median Rent
28.2% income on rent
53°F
Avg Temperature
275 sunny days/yr
67
Violent Crime/100K
1,081 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$82,333 median income, 2.6% unemployment
B+
Affordability
3.9 / 5.0
$400,200 home value, $1,243/mo rent
F
Safety
1.0 / 5.0
67 violent crimes/100K
A
Education
4.0 / 5.0
38.0% bachelor's degree or higher
Westerly experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 32°F in January while summers reach 74°F in July. The area gets 275 sunny days per year. Annual precipitation totals 42.8 inches. Air quality is rated Good with a median AQI of 35.
Temperature
32°F Jan (0°C)
74°F Jul (23°C)
| Annual Average | 52.5°F |
| 3% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 107 ft (33 m) |
| Area | 15.8 sq mi (41.0 km²) |
| Population Density | 1,170/sq mi |
| Coordinates | 41.3733°N, 71.8068°W |
| Timezone | America/New_York |
| County | Washington County County |
| Nearest Airport | Rhode Island Tf Green International (PVD) 31 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0453 ppm |
| PM2.5 (Fine Particles) | 6.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 64.0 / 100 |
| Social Vulnerability | 12.2 / 100 |
| Community Resilience | 97.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
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 | — | 126 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 4.1 in | |
| February | 29°F (-2°C) | 3.6 in | Coldest |
| March | 37°F (3°C) | 4.4 in | |
| April | 46°F (8°C) | 4.3 in | |
| May | 56°F (13°C) | 3.8 in | |
| June | 65°F (18°C) | 3.6 in | |
| July | 74°F (23°C) | 3.2 in | Warmest, Driest |
| August | 71°F (21°C) | 4.0 in | |
| September | 63°F (17°C) | 3.9 in | |
| October | 53°F (12°C) | 3.8 in | |
| November | 44°F (7°C) | 4.7 in | Wettest |
| December | 34°F (1°C) | 4.4 in |
Westerly has a seasonal temperature swing of 45°F / from 29°F in February to 74°F in July. Total annual precipitation is 47.7 inches, with November being the wettest month (4.7") and July the driest (3.2").