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Castle Valley, UT
Full City Profile · Utah · Grand County County
2.7
/5.0
C+
Fair
348
Population
40/sq mi density
$44,464
Median Income
$41,961 per capita
$359,700
Home Value
$695,440 Zillow
55°F
Avg Temperature
330 sunny days/yr
195
Violent Crime/100K
3,429 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$44,464 median income, 0.0% unemployment
C
Affordability
2.1 / 5.0
$359,700 home value, /mo rent
F
Safety
1.0 / 5.0
195 violent crimes/100K
B+
Education
3.7 / 5.0
33.9% bachelor's degree or higher
Castle Valley experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 28°F in January while summers reach 82°F in July. The area gets 330 sunny days per year. Annual precipitation totals 12.3 inches. Air quality is rated Good with a median AQI of 41.
Temperature
28°F Jan (-2°C)
82°F Jul (28°C)
| Annual Average | 54.7°F |
| 1% above US avg | |
| January Average | 28°F (-2°C) |
| July Average | 82°F (28°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 4,779 ft (1,457 m) |
| Area | 8.0 sq mi (20.8 km²) |
| Population Density | 40/sq mi |
| Coordinates | 38.6321°N, 109.3960°W |
| Timezone | America/Denver |
| County | Grand County County |
| Nearest Airport | Canyonlands Regional (CNY) 21 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0470 ppm |
| NO₂ (Nitrogen Dioxide) | 7.5 ppb |
| PM2.5 (Fine Particles) | 7.5 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 10.3 / 100 |
| Social Vulnerability | 31.2 / 100 |
| Community Resilience | 44.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively High |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Volcano | No Rating |
| Avalanche | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 0.9 in | Coldest |
| February | 34°F (1°C) | 0.7 in | |
| March | 42°F (6°C) | 1.1 in | |
| April | 50°F (10°C) | 0.9 in | |
| May | 59°F (15°C) | 0.9 in | |
| June | 70°F (21°C) | 0.5 in | Driest |
| July | 82°F (28°C) | 1.1 in | Warmest |
| August | 75°F (24°C) | 1.2 in | |
| September | 66°F (19°C) | 1.1 in | |
| October | 53°F (12°C) | 1.3 in | Wettest |
| November | 39°F (4°C) | 1.0 in | |
| December | 30°F (-1°C) | 0.9 in |
Castle Valley has a seasonal temperature swing of 53°F / from 28°F in January to 82°F in July. Total annual precipitation is 11.6 inches, with October being the wettest month (1.3") and June the driest (0.5").