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Port Mansfield, TX
Full City Profile · Texas · Willacy County County
3.2
/5.0
B
Good
157
Population
32/sq mi density
$25,000
Median Income
$21,339 per capita
73°F
Avg Temperature
312 sunny days/yr
1,107
Violent Crime/100K
5,075 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$25,000 median income, 0.0% unemployment
F
Safety
1.0 / 5.0
1,107 violent crimes/100K (191% above avg)
A+
Education
5.0 / 5.0
51.3% bachelor's degree or higher
Port Mansfield has a warm climate with an average annual temperature of 73°F (23°C). Winters average 59°F in January while summers reach 84°F in July. The area gets 312 sunny days per year. Annual precipitation totals 25.3 inches. The area receives 0.1 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
59°F Jan (15°C)
84°F Jul (29°C)
| Annual Average | 73.4°F |
| 36% above US avg | |
| January Average | 59°F (15°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 312 days/yr |
Geography
| Elevation | 3 ft (1 m) |
| Area | 6.4 sq mi (16.5 km²) |
| Population Density | 32/sq mi |
| Coordinates | 26.5694°N, 97.4424°W |
| Timezone | America/Chicago |
| County | Willacy County County |
| Nearest Airport | Valley International (HRL) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 77.5 / 100 |
| Social Vulnerability | 95.0 / 100 |
| Community Resilience | 3.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 59°F (15°C) | 1.7 in | Coldest |
| February | 61°F (16°C) | 1.6 in | |
| March | 67°F (20°C) | 0.7 in | Driest |
| April | 73°F (23°C) | 1.5 in | |
| May | 78°F (26°C) | 3.0 in | |
| June | 82°F (28°C) | 3.0 in | |
| July | 84°F (29°C) | 1.5 in | Warmest |
| August | 83°F (29°C) | 2.2 in | |
| September | 80°F (27°C) | 5.7 in | Wettest |
| October | 75°F (24°C) | 2.6 in | |
| November | 67°F (19°C) | 1.9 in | |
| December | 60°F (16°C) | 1.5 in |
Port Mansfield has a seasonal temperature swing of 25°F / from 59°F in January to 84°F in July. Total annual precipitation is 26.8 inches, with September being the wettest month (5.7") and March the driest (0.7").