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Newcastle, UT
Full City Profile · Utah · Iron County County
3.5
/5.0
B+
Good
231
Population
58/sq mi density
$82,670
Median Income
$29,426 per capita
$212,500
Home Value
$383,476 Zillow
49°F
Avg Temperature
318 sunny days/yr
267
Violent Crime/100K
2,625 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$82,670 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$212,500 home value, /mo rent
F
Safety
1.0 / 5.0
267 violent crimes/100K
B
Education
3.4 / 5.0
29.9% bachelor's degree or higher
Newcastle experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 29°F in January while summers reach 72°F in July. The area gets 318 sunny days per year. Air quality is rated Good with a median AQI of 41.
Temperature
29°F Jan (-2°C)
72°F Jul (22°C)
| Annual Average | 48.7°F |
| 10% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 5,259 ft (1,603 m) |
| Area | 4.0 sq mi (10.3 km²) |
| Population Density | 58/sq mi |
| Coordinates | 37.6629°N, 113.5644°W |
| Timezone | America/Denver |
| County | Iron County County |
| Nearest Airport | Cedar City Regional (CDC) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0447 ppm |
| NO₂ (Nitrogen Dioxide) | 12.3 ppb |
| PM2.5 (Fine Particles) | 5.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 61.4 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 36.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively High |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Markagunt Plateau (79 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Markagunt Plateau | Volcanic field | 2,840 m (9,318 ft) | 1050 | 79 km |
| Uinkaret Field | Volcanic field | 1,555 m (5,102 ft) | 1100 | 148 km |
| Black Rock Desert | Volcanic field | 1,800 m (5,906 ft) | 1290 | 173 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 1.3 in | Coldest |
| February | 34°F (1°C) | 1.6 in | |
| March | 39°F (4°C) | 1.9 in | Wettest |
| April | 46°F (8°C) | 1.1 in | |
| May | 54°F (12°C) | 0.9 in | |
| June | 64°F (18°C) | 0.5 in | Driest |
| July | 72°F (22°C) | 1.3 in | Warmest |
| August | 70°F (21°C) | 1.4 in | |
| September | 62°F (16°C) | 1.2 in | |
| October | 50°F (10°C) | 1.1 in | |
| November | 38°F (3°C) | 1.3 in | |
| December | 30°F (-1°C) | 1.3 in |
Newcastle has a seasonal temperature swing of 43°F / from 29°F in January to 72°F in July. Total annual precipitation is 14.9 inches, with March being the wettest month (1.9") and June the driest (0.5").