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Greenhorn, CA
Full City Profile · California · Plumas County County
2.7
/5.0
C+
Fair
188
Population
28/sq mi density
$297,800
Home Value
$401,404 Zillow
50°F
Avg Temperature
293 sunny days/yr
711
Violent Crime/100K
2,093 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
711 violent crimes/100K (87% above avg)
A
Education
4.4 / 5.0
0.0% bachelor's degree or higher
Greenhorn experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 35°F in January while summers reach 68°F in July. The area gets 293 sunny days per year. Annual precipitation totals 41.7 inches. The area receives 28.4 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
35°F Jan (1°C)
68°F Jul (20°C)
| Annual Average | 50.0°F |
| 7% below US avg | |
| January Average | 35°F (1°C) |
| July Average | 68°F (20°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 4,497 ft (1,371 m) |
| Area | 6.7 sq mi (17.4 km²) |
| Population Density | 28/sq mi |
| Coordinates | 39.9030°N, 120.7590°W |
| Timezone | America/Los_Angeles |
| County | Plumas County County |
| Nearest Airport | Reno/Tahoe International (RNO) 60 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| PM2.5 (Fine Particles) | 14.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 86.4 / 100 |
| Social Vulnerability | 91.4 / 100 |
| Community Resilience | 69.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively High |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | No Rating |
| Landslide | Relatively Moderate |
| Volcano | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Lassen Volcanic Center (91 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 91 km |
| Soda Lakes | Maar(s) | 1,251 m (4,104 ft) | Unknown | 167 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (1°C) | 6.5 in | Wettest |
| February | 34°F (1°C) | 5.4 in | |
| March | 37°F (3°C) | 5.0 in | |
| April | 41°F (5°C) | 2.5 in | |
| May | 48°F (9°C) | 1.6 in | |
| June | 56°F (13°C) | 0.9 in | |
| July | 68°F (20°C) | 0.3 in | Warmest, Driest |
| August | 64°F (18°C) | 0.5 in | |
| September | 58°F (14°C) | 0.9 in | |
| October | 50°F (10°C) | 2.5 in | |
| November | 39°F (4°C) | 5.2 in | |
| December | 33°F (1°C) | 5.6 in | Coldest |
Greenhorn has a seasonal temperature swing of 35°F / from 33°F in December to 68°F in July. Total annual precipitation is 36.9 inches, with January being the wettest month (6.5") and July the driest (0.3").