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Portland, CT
Full City Profile · Connecticut · Lower Connecticut River Valley Planning Region County
3.7
/5.0
B+
Good
5,970
Population
995/sq mi density
$91,522
Median Income
$46,126 per capita
$267,600
Home Value
$394,463 Zillow
$1,112
Median Rent
35.7% income on rent
52°F
Avg Temperature
275 sunny days/yr
43
Violent Crime/100K
409 property/100K
B+
Overall
3.7 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$91,522 median income, 4.2% unemployment
A+
Affordability
5.0 / 5.0
$267,600 home value, $1,112/mo rent
F
Safety
1.0 / 5.0
43 violent crimes/100K
A
Education
4.3 / 5.0
41.4% bachelor's degree or higher
Portland experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 29°F in January while summers reach 75°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 39.
Temperature
29°F Jan (-2°C)
75°F Jul (24°C)
| Annual Average | 52.0°F |
| 4% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 353 ft (108 m) |
| Area | 6.0 sq mi (15.5 km²) |
| Population Density | 995/sq mi |
| Coordinates | 41.5775°N, 72.6198°W |
| Timezone | America/New_York |
| County | Lower Connecticut River Valley Planning Region County |
| Nearest Airport | Bradley International (BDL) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 83.8 / 100 |
| Social Vulnerability | 17.9 / 100 |
| Community Resilience | 90.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively 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 | - | 95 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 3.9 in | |
| February | 29°F (-2°C) | 3.5 in | Coldest, Driest |
| March | 37°F (3°C) | 4.1 in | |
| April | 47°F (8°C) | 4.3 in | |
| May | 58°F (14°C) | 4.2 in | |
| June | 66°F (19°C) | 3.9 in | |
| July | 75°F (24°C) | 3.9 in | Warmest |
| August | 71°F (22°C) | 3.8 in | |
| September | 63°F (17°C) | 3.9 in | |
| October | 52°F (11°C) | 3.9 in | |
| November | 43°F (6°C) | 4.4 in | Wettest |
| December | 32°F (0°C) | 4.2 in |
Portland has a seasonal temperature swing of 47°F / from 29°F in February to 75°F in July. Total annual precipitation is 47.9 inches, with November being the wettest month (4.4") and February the driest (3.5").