Castroville, TX
Full City Profile · Texas · Bexar County County
3.4
/5.0
B
Good
3,027
Population
853/sq mi density
$76,524
Median Income
$35,653 per capita
$266,000
Home Value
$425,589 Zillow
$1,184
Median Rent
27.7% income on rent
71°F
Avg Temperature
218
Violent Crime/100K
1,654 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$76,524 median income, 1.9% unemployment
A+
Affordability
4.7 / 5.0
$266,000 home value, $1,184/mo rent
F
Safety
1.0 / 5.0
218 violent crimes/100K
B
Education
3.3 / 5.0
28.5% bachelor's degree or higher
Castroville has a warm climate with an average annual temperature of 71°F (22°C). Winters average 54°F in January while summers reach 85°F in July. Annual precipitation totals 30.9 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 52.
Temperature
54°F Jan (12°C)
85°F Jul (29°C)
| Annual Average | 70.5°F |
| 31% above US avg | |
| January Average | 54°F (12°C) |
| July Average | 85°F (29°C) |
Geography
| Elevation | 773 ft (236 m) |
| Area | 3.6 sq mi (9.2 km²) |
| Population Density | 853/sq mi |
| Coordinates | 29.3599°N, 98.8547°W |
| Timezone | America/Chicago |
| County | Bexar County County |
| Nearest Airport | San Antonio International (SAT) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 52.0 |
| Rating | Moderate |
| Good Days % | 47.5% |
| Unhealthy Days | 22 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0450 ppm |
| NO₂ (Nitrogen Dioxide) | 8.5 ppb |
| SO₂ (Sulfur Dioxide) | 0.47 ppb |
| CO (Carbon Monoxide) | 0.25 ppm |
| PM2.5 (Fine Particles) | 7.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 99.4 / 100 |
| Social Vulnerability | 57.2 / 100 |
| Community Resilience | 21.7 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Very High |
| Hail | Very High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 54°F (12°C) | 1.7 in | Coldest |
| February | 58°F (14°C) | 1.6 in | Driest |
| March | 64°F (18°C) | 2.3 in | |
| April | 71°F (22°C) | 2.5 in | |
| May | 77°F (25°C) | 4.0 in | Wettest |
| June | 83°F (28°C) | 3.2 in | |
| July | 85°F (29°C) | 2.5 in | Warmest |
| August | 85°F (29°C) | 2.6 in | |
| September | 80°F (27°C) | 3.6 in | |
| October | 72°F (22°C) | 3.5 in | |
| November | 63°F (17°C) | 2.0 in | |
| December | 55°F (13°C) | 1.7 in |
Castroville has a seasonal temperature swing of 31°F / from 54°F in January to 85°F in July. Total annual precipitation is 30.9 inches, with May being the wettest month (4.0") and February the driest (1.6").