Mertzon, TX
Full City Profile · Texas · Irion County County
4.0
/5.0
A
Great
819
Population
539/sq mi density
$60,956
Median Income
$28,844 per capita
$121,700
Home Value
$264,314 Zillow
$861
Median Rent
41.3% income on rent
64°F
Avg Temperature
A
Overall
4.0 / 5.0
Strong
A
Economy
4.2 / 5.0
$60,956 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$121,700 home value, $861/mo rent
C+
Education
2.9 / 5.0
24.3% bachelor's degree or higher
Mertzon enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 44°F in January while summers reach 82°F in July. Annual precipitation totals 21.6 inches. The area receives 0.0 inches of snow annually.
Temperature
44°F Jan (7°C)
82°F Jul (28°C)
| Annual Average | 63.9°F |
| 18% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 82°F (28°C) |
Geography
| Elevation | 2,211 ft (674 m) |
| Area | 1.5 sq mi (3.9 km²) |
| Population Density | 539/sq mi |
| Coordinates | 31.2620°N, 100.8208°W |
| Timezone | America/Chicago |
| County | Irion County County |
| Nearest Airport | San Angelo Regional/Mathis Field (SJT) 20 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 1.8 / 100 |
| Social Vulnerability | 71.7 / 100 |
| Community Resilience | 15.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 0.9 in | Coldest, Driest |
| February | 48°F (9°C) | 1.0 in | |
| March | 56°F (13°C) | 1.5 in | |
| April | 64°F (18°C) | 1.6 in | |
| May | 73°F (23°C) | 2.6 in | Wettest |
| June | 80°F (27°C) | 2.5 in | |
| July | 82°F (28°C) | 1.9 in | |
| August | 82°F (28°C) | 2.4 in | Warmest |
| September | 75°F (24°C) | 2.6 in | |
| October | 65°F (18°C) | 2.2 in | |
| November | 53°F (12°C) | 1.5 in | |
| December | 45°F (7°C) | 0.9 in |
Mertzon has a seasonal temperature swing of 38°F / from 44°F in January to 82°F in August. Total annual precipitation is 21.6 inches, with May being the wettest month (2.6") and January the driest (0.9").