Mountain Ranch, CA
Full City Profile · California · Calaveras County County
4.5
/5.0
A+
Excellent
310
Population
79/sq mi density
$160,837
Median Income
$67,569 per capita
$457,900
Home Value
$345,817 Zillow
50°F
Avg Temperature
A+
Overall
4.5 / 5.0
Strong
B+
Economy
3.8 / 5.0
$160,837 median income, 20.6% unemployment
A+
Affordability
5.0 / 5.0
$457,900 home value, /mo rent
A+
Education
4.7 / 5.0
46.8% bachelor's degree or higher
Mountain Ranch 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 40.6 inches. The area receives 3.7 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 | 2,050 ft (625 m) |
| Area | 41.2 sq mi (106.8 km²) |
| Population Density | 79/sq mi |
| Coordinates | 38.2117°N, 120.5311°W |
| Timezone | America/Los_Angeles |
| County | Calaveras County County |
| Nearest Airport | Merced Yosemite Regional (MCE) 63 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)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 4.5 m (15 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1868 | N. CALIFORNIA | Eruption + Earthquake | 4.5 m | 30 | 149 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Mono Lake Volcanic Field (133 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Mono Lake Volcanic Field | Pyroclastic cone(s) | 2,121 m (6,959 ft) | 1790 | 133 km |
| Mono-Inyo Craters | Lava dome(s) | 2,796 m (9,173 ft) | 1380 | 139 km |
| Mammoth Mountain | Lava dome(s) | 3,369 m (11,053 ft) | 1260 | 147 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 7.3 in | |
| February | 38°F (3°C) | 6.9 in | |
| March | 40°F (5°C) | 6.4 in | |
| April | 45°F (7°C) | 3.4 in | |
| May | 52°F (11°C) | 2.1 in | |
| June | 61°F (16°C) | 0.5 in | |
| July | 68°F (20°C) | 0.0 in | Warmest, Driest |
| August | 67°F (20°C) | 0.0 in | |
| September | 62°F (17°C) | 0.3 in | |
| October | 53°F (12°C) | 2.2 in | |
| November | 43°F (6°C) | 4.0 in | |
| December | 37°F (3°C) | 7.5 in | Coldest, Wettest |
Mountain Ranch has a seasonal temperature swing of 31°F / from 37°F in December to 68°F in July. Total annual precipitation is 40.6 inches, with December being the wettest month (7.5") and July the driest (0.0").