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Grass Valley, CA
Full City Profile · California · Yuba County County
2.3
/5.0
C
Fair
14,126
Population
2,354/sq mi density
$48,850
Median Income
$34,832 per capita
$458,400
Home Value
$499,888 Zillow
$1,417
Median Rent
39.7% income on rent
56°F
Avg Temperature
290 sunny days/yr
565
Violent Crime/100K
3,584 property/100K
C
Overall
2.3 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$48,850 median income, 2.0% unemployment
F
Affordability
1.4 / 5.0
$458,400 home value, $1,417/mo rent
F
Safety
1.0 / 5.0
565 violent crimes/100K (49% above avg)
B+
Education
3.6 / 5.0
32.0% bachelor's degree or higher
Grass Valley 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 | 2,451 ft (747 m) |
| Area | 4.7 sq mi (12.3 km²) |
| Population Density | 2,354/sq mi |
| Coordinates | 39.2203°N, 121.0527°W |
| Timezone | America/Los_Angeles |
| County | Yuba County County |
| Nearest Airport | Sacramento International (SMF) 46 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: Lassen Volcanic Center (147 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 147 km |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 151 km |
| Soda Lakes | Maar(s) | 1,251 m (4,104 ft) | Unknown | 191 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 9.3 in | Wettest |
| February | 46°F (8°C) | 7.5 in | |
| March | 48°F (9°C) | 7.1 in | |
| April | 53°F (12°C) | 3.5 in | |
| May | 60°F (15°C) | 1.3 in | |
| June | 67°F (20°C) | 0.6 in | |
| July | 73°F (23°C) | 0.1 in | Warmest, Driest |
| August | 73°F (23°C) | 0.2 in | |
| September | 68°F (20°C) | 0.8 in | |
| October | 60°F (15°C) | 3.0 in | |
| November | 49°F (9°C) | 7.2 in | |
| December | 43°F (6°C) | 8.0 in | Coldest |
Grass Valley has a seasonal temperature swing of 30°F / from 43°F in December to 73°F in July. Total annual precipitation is 48.6 inches, with January being the wettest month (9.3") and July the driest (0.1").