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Geyserville, CA
Full City Profile · California · Sonoma County County
2.9
/5.0
C+
Fair
830
Population
184/sq mi density
$107,500
Median Income
$48,317 per capita
$710,100
Home Value
$1,113,391 Zillow
$1,864
Median Rent
26.2% income on rent
60°F
Avg Temperature
293 sunny days/yr
164
Violent Crime/100K
2,057 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$107,500 median income, 4.6% unemployment
C+
Affordability
2.9 / 5.0
$710,100 home value, $1,864/mo rent
F
Safety
1.0 / 5.0
164 violent crimes/100K
B
Education
3.1 / 5.0
26.0% bachelor's degree or higher
Geyserville enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 49°F in January while summers reach 72°F in July. The area gets 293 sunny days per year. Annual precipitation totals 42.8 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
49°F Jan (9°C)
72°F Jul (22°C)
| Annual Average | 60.2°F |
| 11% above US avg | |
| January Average | 49°F (9°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 213 ft (65 m) |
| Area | 4.5 sq mi (11.7 km²) |
| Population Density | 184/sq mi |
| Coordinates | 38.7173°N, 122.9034°W |
| Timezone | America/Los_Angeles |
| County | Sonoma County County |
| Nearest Airport | Sacramento International (SMF) 71 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0321 ppm |
| NO₂ (Nitrogen Dioxide) | 5.8 ppb |
| CO (Carbon Monoxide) | 0.29 ppm |
| PM2.5 (Fine Particles) | 5.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 99.1 / 100 |
| Social Vulnerability | 29.8 / 100 |
| Community Resilience | 66.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively High |
| Wildfire | Relatively High |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Relatively Moderate |
| Tsunami | Very Low |
| Volcano | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
3 tsunamis recorded within 500 km. Highest wave on record: 4.5 m (15 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1868 | N. CALIFORNIA | Eruption + Earthquake | 4.5 m | 30 | 133 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | — | 145 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | — | 119 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (30 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 30 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (9°C) | 8.7 in | Wettest |
| February | 49°F (10°C) | 6.7 in | |
| March | 51°F (10°C) | 5.8 in | |
| April | 55°F (13°C) | 2.4 in | |
| May | 60°F (16°C) | 0.8 in | |
| June | 66°F (19°C) | 0.2 in | |
| July | 72°F (22°C) | 0.1 in | Warmest, Driest |
| August | 71°F (22°C) | 0.2 in | |
| September | 68°F (20°C) | 0.6 in | |
| October | 62°F (17°C) | 2.2 in | |
| November | 53°F (11°C) | 5.9 in | |
| December | 47°F (8°C) | 6.7 in | Coldest |
Geyserville has a seasonal temperature swing of 25°F / from 47°F in December to 72°F in July. Total annual precipitation is 40.2 inches, with January being the wettest month (8.7") and July the driest (0.1").