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Graton, CA
Full City Profile · California · Sonoma County County
2.9
/5.0
C+
Fair
1,819
Population
1,151/sq mi density
$108,750
Median Income
$64,330 per capita
$911,300
Home Value
$781,310 Zillow
$2,770
Median Rent
18.0% income on rent
58°F
Avg Temperature
302 sunny days/yr
131
Violent Crime/100K
1,622 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A
Economy
4.2 / 5.0
$108,750 median income, 1.2% unemployment
D
Affordability
1.9 / 5.0
$911,300 home value, $2,770/mo rent
F
Safety
1.0 / 5.0
131 violent crimes/100K
A+
Education
4.5 / 5.0
44.2% bachelor's degree or higher
Graton enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 48°F in January while summers reach 67°F in July. The area gets 302 sunny days per year. Annual precipitation totals 39.9 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
48°F Jan (9°C)
67°F Jul (19°C)
| Annual Average | 57.9°F |
| 7% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 205 ft (62 m) |
| Area | 1.6 sq mi (4.1 km²) |
| Population Density | 1,151/sq mi |
| Coordinates | 38.4375°N, 122.8660°W |
| Timezone | America/Los_Angeles |
| County | Sonoma County County |
| Nearest Airport | Metro Oakland International (OAK) 61 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 | 106 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 116 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 88 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (60 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 60 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 8.4 in | Wettest |
| February | 50°F (10°C) | 6.9 in | |
| March | 52°F (11°C) | 5.9 in | |
| April | 55°F (13°C) | 2.2 in | |
| May | 59°F (15°C) | 0.8 in | |
| June | 63°F (17°C) | 0.2 in | |
| July | 67°F (19°C) | 0.1 in | Warmest, Driest |
| August | 65°F (18°C) | 0.2 in | |
| September | 64°F (18°C) | 0.6 in | |
| October | 60°F (16°C) | 2.3 in | |
| November | 53°F (11°C) | 6.0 in | |
| December | 47°F (8°C) | 6.5 in | Coldest |
Graton has a seasonal temperature swing of 19°F / from 47°F in December to 67°F in July. Total annual precipitation is 40.0 inches, with January being the wettest month (8.4") and July the driest (0.1").