Mercedes, TX
Full City Profile · Texas · Cameron County County
2.5
/5.0
C+
Fair
16,449
Population
1,394/sq mi density
$41,753
Median Income
$18,376 per capita
$107,700
Home Value
$143,088 Zillow
$676
Median Rent
38.1% income on rent
75°F
Avg Temperature
397
Violent Crime/100K
3,244 property/100K
C+
Overall
2.5 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.0 / 5.0
$41,753 median income, 8.3% unemployment
A+
Affordability
5.0 / 5.0
$107,700 home value, $676/mo rent
F
Safety
1.0 / 5.0
397 violent crimes/100K (4% above avg)
C
Education
2.2 / 5.0
14.9% bachelor's degree or higher
Mercedes has a warm climate with an average annual temperature of 75°F (24°C). Winters average 61°F in January while summers reach 86°F in July. Annual precipitation totals 25.7 inches. The area receives 0.2 inches of snow annually. Air quality is rated Moderate with a median AQI of 61.
Temperature
61°F Jan (16°C)
86°F Jul (30°C)
| Annual Average | 75.0°F |
| 39% above US avg | |
| January Average | 61°F (16°C) |
| July Average | 86°F (30°C) |
Geography
| Elevation | 69 ft (21 m) |
| Area | 11.5 sq mi (29.8 km²) |
| Population Density | 1,394/sq mi |
| Coordinates | 26.1538°N, 97.9129°W |
| Timezone | America/Chicago |
| County | Cameron County County |
| Nearest Airport | Valley International (HRL) 17 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 61.0 |
| Rating | Moderate |
| Good Days % | 27.0% |
| Unhealthy Days | 61 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0363 ppm |
| PM2.5 (Fine Particles) | 9.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.3 / 100 |
| Social Vulnerability | 91.7 / 100 |
| Community Resilience | 6.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Very High |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 1.0 in | Coldest |
| February | 64°F (18°C) | 1.0 in | Driest |
| March | 70°F (21°C) | 1.5 in | |
| April | 76°F (24°C) | 1.5 in | |
| May | 81°F (27°C) | 2.6 in | |
| June | 85°F (30°C) | 2.8 in | |
| July | 86°F (30°C) | 2.2 in | |
| August | 87°F (31°C) | 1.9 in | Warmest |
| September | 82°F (28°C) | 5.6 in | Wettest |
| October | 77°F (25°C) | 2.8 in | |
| November | 69°F (21°C) | 1.6 in | |
| December | 62°F (17°C) | 1.3 in |
Mercedes has a seasonal temperature swing of 26°F / from 61°F in January to 87°F in August. Total annual precipitation is 25.7 inches, with September being the wettest month (5.6") and February the driest (1.0").