All Countries
Union Valley, TX
Full City Profile · Texas · Rockwall County County
3.1
/5.0
B
Good
600
Population
226/sq mi density
$74,792
Median Income
$43,410 per capita
$326,100
Home Value
$314,148 Zillow
66°F
Avg Temperature
330 sunny days/yr
162
Violent Crime/100K
753 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$74,792 median income, 0.0% unemployment
A
Affordability
4.2 / 5.0
$326,100 home value, /mo rent
F
Safety
1.0 / 5.0
162 violent crimes/100K
B
Education
3.4 / 5.0
29.9% bachelor's degree or higher
Union Valley enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 47°F in January while summers reach 85°F in July. The area gets 330 sunny days per year. Annual precipitation totals 38.4 inches. Air quality is rated Good with a median AQI of 42.
Temperature
47°F Jan (8°C)
85°F Jul (29°C)
| Annual Average | 66.4°F |
| 23% above US avg | |
| January Average | 47°F (8°C) |
| July Average | 85°F (29°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 517 ft (158 m) |
| Area | 1.8 sq mi (4.6 km²) |
| Population Density | 226/sq mi |
| Coordinates | 32.9295°N, 96.2488°W |
| Timezone | America/Chicago |
| County | Rockwall County County |
| Nearest Airport | Dallas Love Field (DAL) 35 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0418 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 70.7 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 86.3 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (8°C) | 2.3 in | |
| February | 48°F (9°C) | 3.0 in | |
| March | 56°F (13°C) | 3.5 in | |
| April | 63°F (17°C) | 4.1 in | |
| May | 71°F (22°C) | 5.4 in | Wettest |
| June | 79°F (26°C) | 3.8 in | |
| July | 85°F (29°C) | 2.5 in | Warmest |
| August | 83°F (28°C) | 2.0 in | Driest |
| September | 76°F (25°C) | 3.9 in | |
| October | 66°F (19°C) | 4.3 in | |
| November | 54°F (12°C) | 3.3 in | |
| December | 46°F (8°C) | 3.0 in | Coldest |
Union Valley has a seasonal temperature swing of 39°F / from 46°F in December to 85°F in July. Total annual precipitation is 41.1 inches, with May being the wettest month (5.4") and August the driest (2.0").