Sebastian, TX
Full City Profile · Texas · Willacy County County
3.1
/5.0
B
Good
1,144
Population
685/sq mi density
$24,395
Median Income
$18,626 per capita
$37,600
Home Value
$114,670 Zillow
$369
Median Rent
38.4% income on rent
75°F
Avg Temperature
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
C+
Economy
2.7 / 5.0
$24,395 median income, 1.9% unemployment
A+
Affordability
5.0 / 5.0
$37,600 home value, $369/mo rent
D
Education
1.6 / 5.0
7.2% bachelor's degree or higher
Sebastian 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 24.0 inches. The area receives 0.1 inches of snow annually.
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 | 56 ft (17 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 685/sq mi |
| Coordinates | 26.3452°N, 97.7963°W |
| Timezone | America/Chicago |
| County | Willacy County County |
| Nearest Airport | Valley International (HRL) 12 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 77.5 / 100 |
| Social Vulnerability | 95.0 / 100 |
| Community Resilience | 3.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Low |
| Drought | Relatively High |
| Cold Wave | Relatively High |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 1.1 in | Coldest |
| February | 65°F (18°C) | 0.7 in | Driest |
| March | 70°F (21°C) | 1.3 in | |
| April | 76°F (24°C) | 1.5 in | |
| May | 81°F (27°C) | 2.5 in | |
| June | 85°F (29°C) | 2.3 in | |
| July | 86°F (30°C) | 1.8 in | |
| August | 86°F (30°C) | 1.9 in | Warmest |
| September | 82°F (28°C) | 5.3 in | Wettest |
| October | 77°F (25°C) | 2.7 in | |
| November | 68°F (20°C) | 1.8 in | |
| December | 62°F (17°C) | 1.2 in |
Sebastian has a seasonal temperature swing of 25°F / from 61°F in January to 86°F in August. Total annual precipitation is 24.0 inches, with September being the wettest month (5.3") and February the driest (0.7").