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Castle Hills, TX
Full City Profile · Texas · Bexar County County
3.8
/5.0
B+
Good
3,961
Population
1,604/sq mi density
$95,583
Median Income
$53,265 per capita
$429,000
Home Value
$449,827 Zillow
$1,418
Median Rent
36.5% income on rent
67°F
Avg Temperature
300 sunny days/yr
377
Violent Crime/100K
6,423 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$95,583 median income, 1.0% unemployment
A
Affordability
4.1 / 5.0
$429,000 home value, $1,418/mo rent
F
Safety
1.0 / 5.0
377 violent crimes/100K
A+
Education
5.0 / 5.0
50.2% bachelor's degree or higher
Castle Hills enjoys a temperate climate with an average annual temperature of 67°F (19°C). Winters average 49°F in January while summers reach 82°F in July. The area gets 300 sunny days per year. Annual precipitation totals 37.5 inches. The area receives 0.1 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
49°F Jan (9°C)
82°F Jul (28°C)
| Annual Average | 66.5°F |
| 23% above US avg | |
| January Average | 49°F (9°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 300 days/yr |
Geography
| Elevation | 846 ft (258 m) |
| Area | 2.5 sq mi (6.4 km²) |
| Population Density | 1,604/sq mi |
| Coordinates | 29.5247°N, 98.5191°W |
| Timezone | America/Chicago |
| County | Bexar County County |
| Nearest Airport | San Antonio International (SAT) 3 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
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 | 49°F (9°C) | 1.7 in | Coldest, Driest |
| February | 54°F (12°C) | 2.0 in | |
| March | 61°F (16°C) | 1.9 in | |
| April | 68°F (20°C) | 2.6 in | |
| May | 75°F (24°C) | 4.4 in | Wettest |
| June | 80°F (27°C) | 4.0 in | |
| July | 82°F (28°C) | 2.1 in | |
| August | 83°F (28°C) | 2.7 in | Warmest |
| September | 78°F (26°C) | 3.4 in | |
| October | 70°F (21°C) | 3.6 in | |
| November | 59°F (15°C) | 2.4 in | |
| December | 52°F (11°C) | 1.9 in |
Castle Hills has a seasonal temperature swing of 34°F / from 49°F in January to 83°F in August. Total annual precipitation is 32.6 inches, with May being the wettest month (4.4") and January the driest (1.7").