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Heidelberg, TX
Full City Profile · Texas · Cameron County County
2.4
/5.0
C
Fair
2,221
Population
841/sq mi density
$31,466
Median Income
$11,051 per capita
$59,200
Home Value
$140,307 Zillow
75°F
Avg Temperature
312 sunny days/yr
619
Violent Crime/100K
5,095 property/100K
C
Overall
2.4 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.4 / 5.0
$31,466 median income, 22.3% unemployment
A+
Affordability
5.0 / 5.0
$59,200 home value, /mo rent
F
Safety
1.0 / 5.0
619 violent crimes/100K (63% above avg)
F
Education
1.2 / 5.0
2.9% bachelor's degree or higher
Heidelberg 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. The area gets 312 sunny days per year. Annual precipitation totals 25.7 inches. Air quality is rated Good with a median AQI of 42.
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) |
| Sunny Days | 312 days/yr |
Geography
| Elevation | 59 ft (18 m) |
| Area | 2.6 sq mi (6.8 km²) |
| Population Density | 841/sq mi |
| Coordinates | 26.1828°N, 97.8859°W |
| Timezone | America/Chicago |
| County | Cameron County County |
| Nearest Airport | Valley International (HRL) 15 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
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) | 1.5 in | Coldest |
| February | 62°F (17°C) | 1.5 in | |
| March | 69°F (21°C) | 0.7 in | Driest |
| April | 75°F (24°C) | 1.4 in | |
| May | 79°F (26°C) | 3.0 in | |
| June | 83°F (28°C) | 2.9 in | |
| July | 86°F (30°C) | 2.1 in | Warmest |
| August | 85°F (29°C) | 2.5 in | |
| September | 82°F (28°C) | 5.0 in | Wettest |
| October | 75°F (24°C) | 2.3 in | |
| November | 67°F (20°C) | 1.3 in | |
| December | 61°F (16°C) | 1.3 in |
Heidelberg has a seasonal temperature swing of 25°F / from 61°F in January to 86°F in July. Total annual precipitation is 25.4 inches, with September being the wettest month (5.0") and March the driest (0.7").