Graniteville, CA
Full City Profile · California · Nevada County County
4.7
/5.0
A+
Excellent
15
Population
10/sq mi density
50°F
Avg Temperature
A+
Overall
4.7 / 5.0
Strong
A+
Education
4.7 / 5.0
46.7% bachelor's degree or higher
Graniteville experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 37°F in January while summers reach 68°F in July. Annual precipitation totals 62.4 inches. The area receives 26.2 inches of snow annually. Air quality is rated Good with a median AQI of 36.
Temperature
37°F Jan (3°C)
68°F Jul (20°C)
| Annual Average | 50.4°F |
| 7% below US avg | |
| January Average | 37°F (3°C) |
| July Average | 68°F (20°C) |
Geography
| Elevation | 4,990 ft (1,521 m) |
| Area | 1.5 sq mi (3.9 km²) |
| Population Density | 10/sq mi |
| Coordinates | 39.4444°N, 120.7360°W |
| Timezone | America/Los_Angeles |
| County | Nevada County County |
| Nearest Airport | Reno/Tahoe International (RNO) 52 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
| Good Days % | 85.8% |
| Unhealthy Days | 2 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0473 ppm |
| PM2.5 (Fine Particles) | 4.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.9 / 100 |
| Social Vulnerability | 43.5 / 100 |
| Community Resilience | 65.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | No Rating |
| Landslide | Relatively Moderate |
| Volcano | Very Low |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Lassen Volcanic Center (134 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 134 km |
| Soda Lakes | Maar(s) | 1,251 m (4,104 ft) | Unknown | 160 km |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 183 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 10.6 in | |
| February | 38°F (3°C) | 10.1 in | |
| March | 40°F (4°C) | 9.0 in | |
| April | 44°F (7°C) | 5.1 in | |
| May | 52°F (11°C) | 4.1 in | |
| June | 60°F (16°C) | 1.1 in | |
| July | 68°F (20°C) | 0.0 in | Warmest, Driest |
| August | 68°F (20°C) | 0.2 in | |
| September | 64°F (18°C) | 0.6 in | |
| October | 54°F (12°C) | 3.6 in | |
| November | 44°F (7°C) | 7.2 in | |
| December | 37°F (3°C) | 10.9 in | Coldest, Wettest |
Graniteville has a seasonal temperature swing of 31°F / from 37°F in December to 68°F in July. Total annual precipitation is 62.4 inches, with December being the wettest month (10.9") and July the driest (0.0").