Arnold, CA
Full City Profile · California · Calaveras County County
4.0
/5.0
A
Great
2,276
Population
262/sq mi density
$92,589
Median Income
$64,400 per capita
$508,400
Home Value
$416,556 Zillow
$1,679
Median Rent
23.2% income on rent
50°F
Avg Temperature
A
Overall
4.0 / 5.0
Strong
A
Economy
4.2 / 5.0
$92,589 median income, 6.3% unemployment
B+
Affordability
3.6 / 5.0
$508,400 home value, $1,679/mo rent
A
Education
4.3 / 5.0
41.2% bachelor's degree or higher
Arnold experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 38°F in January while summers reach 68°F in July. Annual precipitation totals 55.5 inches. The area receives 104.8 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
38°F Jan (3°C)
68°F Jul (20°C)
| Annual Average | 50.3°F |
| 7% below US avg | |
| January Average | 38°F (3°C) |
| July Average | 68°F (20°C) |
Geography
| Elevation | 4,348 ft (1,325 m) |
| Area | 14.9 sq mi (38.5 km²) |
| Population Density | 262/sq mi |
| Coordinates | 38.2490°N, 120.3493°W |
| Timezone | America/Los_Angeles |
| County | Calaveras County County |
| Nearest Airport | Merced Yosemite Regional (MCE) 66 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
| Good Days % | 72.7% |
| Unhealthy Days | 8 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0414 ppm |
| PM2.5 (Fine Particles) | 5.6 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.6 / 100 |
| Social Vulnerability | 57.9 / 100 |
| Community Resilience | 39.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Drought | Relatively High |
| Cold Wave | No Rating |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Mono Lake Volcanic Field (119 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Mono Lake Volcanic Field | Pyroclastic cone(s) | 2,121 m (6,959 ft) | 1790 | 119 km |
| Mono-Inyo Craters | Lava dome(s) | 2,796 m (9,173 ft) | 1380 | 126 km |
| Mammoth Mountain | Lava dome(s) | 3,369 m (11,053 ft) | 1260 | 134 km |
| Soda Lakes | Maar(s) | 1,251 m (4,104 ft) | Unknown | 192 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 10.6 in | Wettest |
| February | 38°F (3°C) | 9.8 in | |
| March | 40°F (5°C) | 8.5 in | |
| April | 45°F (7°C) | 4.6 in | |
| May | 52°F (11°C) | 2.8 in | |
| June | 61°F (16°C) | 1.0 in | |
| July | 68°F (20°C) | 0.1 in | Warmest |
| August | 67°F (20°C) | 0.1 in | Driest |
| September | 62°F (17°C) | 0.4 in | |
| October | 53°F (12°C) | 2.9 in | |
| November | 43°F (6°C) | 5.2 in | |
| December | 37°F (3°C) | 9.7 in | Coldest |
Arnold has a seasonal temperature swing of 31°F / from 37°F in December to 68°F in July. Total annual precipitation is 55.5 inches, with January being the wettest month (10.6") and August the driest (0.1").