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Sebastian, TX
Full City Profile · Texas · Willacy County County
2.6
/5.0
C+
Fair
1,144
Population
685/sq mi density
$24,395
Median Income
$18,626 per capita
$37,600
Home Value
$117,999 Zillow
$369
Median Rent
38.4% income on rent
75°F
Avg Temperature
312 sunny days/yr
155
Violent Crime/100K
620 property/100K
C+
Overall
2.6 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.7 / 5.0
$24,395 median income, 1.0% unemployment
A+
Affordability
5.0 / 5.0
$37,600 home value, $369/mo rent
F
Safety
1.0 / 5.0
155 violent crimes/100K
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 60°F in January while summers reach 86°F in July. The area gets 312 sunny days per year. Annual precipitation totals 24.6 inches. The area receives 0.1 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
60°F Jan (16°C)
86°F Jul (30°C)
| Annual Average | 74.7°F |
| 38% above US avg | |
| January Average | 60°F (16°C) |
| July Average | 86°F (30°C) |
| Sunny Days | 312 days/yr |
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
| AQI Median | 42.0 |
| Rating | Good |
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 | 60°F (16°C) | 1.5 in | Coldest |
| February | 62°F (17°C) | 1.6 in | |
| March | 69°F (20°C) | 0.8 in | Driest |
| April | 74°F (23°C) | 1.5 in | |
| May | 79°F (26°C) | 3.2 in | |
| June | 83°F (28°C) | 3.1 in | |
| July | 86°F (30°C) | 1.9 in | Warmest |
| August | 85°F (29°C) | 2.8 in | |
| September | 82°F (28°C) | 5.6 in | Wettest |
| October | 75°F (24°C) | 2.6 in | |
| November | 67°F (20°C) | 1.5 in | |
| December | 61°F (16°C) | 1.3 in |
Sebastian has a seasonal temperature swing of 26°F / from 60°F in January to 86°F in July. Total annual precipitation is 27.4 inches, with September being the wettest month (5.6") and March the driest (0.8").