San Ygnacio, TX
Full City Profile · Texas · Webb County County
1.3
/5.0
F
Poor
495
Population
326/sq mi density
$83,700
Home Value
$362,979 Zillow
74°F
Avg Temperature
F
Overall
1.3 / 5.0
Below average overall score based on economy, affordability, safety and education
F
Education
1.3 / 5.0
3.4% bachelor's degree or higher
San Ygnacio has a warm climate with an average annual temperature of 74°F (23°C). Winters average 57°F in January while summers reach 87°F in July. Annual precipitation totals 20.4 inches. The area receives 0.1 inches of snow annually. Air quality is rated Good with a median AQI of 45.
Temperature
57°F Jan (14°C)
87°F Jul (31°C)
| Annual Average | 74.4°F |
| 38% above US avg | |
| January Average | 57°F (14°C) |
| July Average | 87°F (31°C) |
Geography
| Elevation | 362 ft (110 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 326/sq mi |
| Coordinates | 27.0532°N, 99.4237°W |
| Timezone | America/Chicago |
| County | Webb County County |
| Nearest Airport | Laredo International (LRD) 34 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
| Good Days % | 57.7% |
| Unhealthy Days | 15 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0409 ppm |
| CO (Carbon Monoxide) | 0.10 ppm |
| PM2.5 (Fine Particles) | 8.9 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.3 / 100 |
| Social Vulnerability | 94.3 / 100 |
| Community Resilience | 7.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 57°F (14°C) | 0.8 in | Coldest |
| February | 63°F (17°C) | 0.5 in | Driest |
| March | 70°F (21°C) | 0.7 in | |
| April | 76°F (25°C) | 1.2 in | |
| May | 82°F (28°C) | 2.6 in | |
| June | 87°F (31°C) | 2.6 in | |
| July | 87°F (31°C) | 2.8 in | |
| August | 88°F (31°C) | 1.5 in | Warmest |
| September | 83°F (28°C) | 4.4 in | Wettest |
| October | 76°F (24°C) | 1.4 in | |
| November | 66°F (19°C) | 1.2 in | |
| December | 58°F (15°C) | 0.7 in |
San Ygnacio has a seasonal temperature swing of 31°F / from 57°F in January to 88°F in August. Total annual precipitation is 20.4 inches, with September being the wettest month (4.4") and February the driest (0.5").