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Alta Sierra CDP (Nevada County), CA
Full City Profile · California · Yuba County County
3.5
/5.0
B+
Good
7,061
Population
849/sq mi density
$99,576
Median Income
$49,657 per capita
$560,600
Home Value
$499,888 Zillow
$2,033
Median Rent
35.6% income on rent
56°F
Avg Temperature
290 sunny days/yr
853
Violent Crime/100K
5,291 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$99,576 median income, 2.1% unemployment
B
Affordability
3.5 / 5.0
$560,600 home value, $2,033/mo rent
F
Safety
1.0 / 5.0
853 violent crimes/100K (125% above avg)
A
Education
4.4 / 5.0
42.0% bachelor's degree or higher
Alta Sierra CDP (Nevada County) enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 43°F in January while summers reach 73°F in July. The area gets 290 sunny days per year. Annual precipitation totals 53.2 inches. The area receives 8.6 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
43°F Jan (6°C)
73°F Jul (23°C)
| Annual Average | 56.1°F |
| 4% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 290 days/yr |
Geography
| Elevation | 2,083 ft (635 m) |
| Area | 8.3 sq mi (21.5 km²) |
| Population Density | 849/sq mi |
| Coordinates | 39.1262°N, 121.0491°W |
| Timezone | America/Los_Angeles |
| County | Yuba County County |
| Nearest Airport | Sacramento International (SMF) 42 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 80.9 / 100 |
| Social Vulnerability | 30.4 / 100 |
| Community Resilience | 36.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| 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
3 volcanoes within 200 km. Closest: Clear Lake (150 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 150 km |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 157 km |
| Soda Lakes | Maar(s) | 1,251 m (4,104 ft) | Unknown | 193 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 7.8 in | Coldest, Wettest |
| February | 48°F (9°C) | 6.6 in | |
| March | 50°F (10°C) | 6.5 in | |
| April | 55°F (13°C) | 3.0 in | |
| May | 62°F (17°C) | 1.1 in | |
| June | 69°F (21°C) | 0.4 in | |
| July | 73°F (23°C) | 0.1 in | Driest |
| August | 75°F (24°C) | 0.2 in | Warmest |
| September | 70°F (21°C) | 0.8 in | |
| October | 62°F (16°C) | 2.6 in | |
| November | 50°F (10°C) | 6.5 in | |
| December | 45°F (7°C) | 6.6 in |
Alta Sierra CDP (Nevada County) has a seasonal temperature swing of 31°F / from 43°F in January to 75°F in August. Total annual precipitation is 42.1 inches, with January being the wettest month (7.8") and July the driest (0.1").