San Diego, TX
Full City Profile · Texas · Jim Wells County County
2.9
/5.0
C+
Fair
3,795
Population
1,997/sq mi density
$46,969
Median Income
$21,265 per capita
$59,600
Home Value
$95,351 Zillow
73°F
Avg Temperature
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.2 / 5.0
$46,969 median income, 8.6% unemployment
A+
Affordability
5.0 / 5.0
$59,600 home value, /mo rent
D
Education
1.5 / 5.0
6.8% bachelor's degree or higher
San Diego has a warm climate with an average annual temperature of 73°F (23°C). Winters average 57°F in January while summers reach 85°F in July. Annual precipitation totals 29.1 inches. The area receives 0.5 inches of snow annually.
Temperature
57°F Jan (14°C)
85°F Jul (30°C)
| Annual Average | 72.8°F |
| 35% above US avg | |
| January Average | 57°F (14°C) |
| July Average | 85°F (30°C) |
Geography
| Elevation | 318 ft (97 m) |
| Area | 1.9 sq mi (4.9 km²) |
| Population Density | 1,997/sq mi |
| Coordinates | 27.7609°N, 98.2389°W |
| Timezone | America/Chicago |
| County | Jim Wells County County |
| Nearest Airport | Alice International (ALI) 13 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.5 / 100 |
| Social Vulnerability | 93.3 / 100 |
| Community Resilience | 18.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| 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) | 1.2 in | Coldest, Driest |
| February | 61°F (16°C) | 1.3 in | |
| March | 67°F (20°C) | 2.2 in | |
| April | 74°F (23°C) | 1.5 in | |
| May | 79°F (26°C) | 4.1 in | |
| June | 84°F (29°C) | 3.7 in | |
| July | 85°F (30°C) | 2.6 in | |
| August | 86°F (30°C) | 2.9 in | Warmest |
| September | 82°F (28°C) | 4.5 in | Wettest |
| October | 74°F (24°C) | 1.7 in | |
| November | 65°F (19°C) | 1.6 in | |
| December | 59°F (15°C) | 1.9 in |
San Diego has a seasonal temperature swing of 29°F / from 57°F in January to 86°F in August. Total annual precipitation is 29.1 inches, with September being the wettest month (4.5") and January the driest (1.2").