Long Barn, CA
Full City Profile · California · Calaveras County County
5.0
/5.0
A+
Excellent
20
Population
7/sq mi density
55°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
A+
Education
5.0 / 5.0
100.0% bachelor's degree or higher
Long Barn experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 40°F in January while summers reach 74°F in July. Annual precipitation totals 49.0 inches. The area receives 107.6 inches of snow annually. Air quality is rated Good with a median AQI of 42.
Temperature
40°F Jan (5°C)
74°F Jul (23°C)
| Annual Average | 54.6°F |
| 1% above US avg | |
| January Average | 40°F (5°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 5,024 ft (1,531 m) |
| Area | 2.9 sq mi (7.5 km²) |
| Population Density | 7/sq mi |
| Coordinates | 38.0933°N, 120.1347°W |
| Timezone | America/Los_Angeles |
| County | Calaveras County County |
| Nearest Airport | Merced Yosemite Regional (MCE) 58 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 (97 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Mono Lake Volcanic Field | Pyroclastic cone(s) | 2,121 m (6,959 ft) | 1790 | 97 km |
| Mono-Inyo Craters | Lava dome(s) | 2,796 m (9,173 ft) | 1380 | 102 km |
| Mammoth Mountain | Lava dome(s) | 3,369 m (11,053 ft) | 1260 | 110 km |
| Soda Lakes | Maar(s) | 1,251 m (4,104 ft) | Unknown | 194 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (5°C) | 9.7 in | Wettest |
| February | 41°F (5°C) | 8.3 in | |
| March | 44°F (7°C) | 7.4 in | |
| April | 49°F (9°C) | 3.9 in | |
| May | 57°F (14°C) | 2.6 in | |
| June | 66°F (19°C) | 0.8 in | |
| July | 74°F (23°C) | 0.3 in | Warmest |
| August | 73°F (23°C) | 0.1 in | Driest |
| September | 67°F (20°C) | 0.4 in | |
| October | 57°F (14°C) | 2.7 in | |
| November | 47°F (8°C) | 4.6 in | |
| December | 40°F (4°C) | 8.3 in | Coldest |
Long Barn has a seasonal temperature swing of 34°F / from 40°F in December to 74°F in July. Total annual precipitation is 49.1 inches, with January being the wettest month (9.7") and August the driest (0.1").