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Petaluma, CA
Full City Profile · California · Marin County County
3.2
/5.0
B
Good
59,321
Population
4,114/sq mi density
$109,823
Median Income
$59,036 per capita
$834,900
Home Value
$891,559 Zillow
$2,379
Median Rent
33.9% income on rent
58°F
Avg Temperature
326 sunny days/yr
304
Violent Crime/100K
1,264 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$109,823 median income, 2.9% unemployment
C
Affordability
2.4 / 5.0
$834,900 home value, $2,379/mo rent
F
Safety
1.0 / 5.0
304 violent crimes/100K
A
Education
4.4 / 5.0
42.9% bachelor's degree or higher
Petaluma 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 326 sunny days per year. Annual precipitation totals 25.6 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 | 58.0°F |
| 7% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 67°F (19°C) |
| Sunny Days | 326 days/yr |
Geography
| Elevation | 16 ft (5 m) |
| Area | 14.5 sq mi (37.5 km²) |
| Population Density | 4,114/sq mi |
| Coordinates | 38.2423°N, 122.6288°W |
| Timezone | America/Los_Angeles |
| County | Marin County County |
| Nearest Airport | Metro Oakland International (OAK) 42 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0326 ppm |
| NO₂ (Nitrogen Dioxide) | 9.1 ppb |
| CO (Carbon Monoxide) | 0.31 ppm |
| PM2.5 (Fine Particles) | 5.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.4 / 100 |
| Social Vulnerability | 24.7 / 100 |
| Community Resilience | 99.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Very High |
| Tsunami | Relatively Moderate |
| Volcano | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
5 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 | 76 km |
| 1989 | N. CALIFORNIA | Earthquake | 1.0 m | 62 | 149 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 87 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 61 km |
| 1865 | N. CALIFORNIA | Eruption + Earthquake | - | - | 132 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (82 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 82 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 6.9 in | Wettest |
| February | 51°F (11°C) | 6.0 in | |
| March | 53°F (12°C) | 4.7 in | |
| April | 56°F (13°C) | 1.8 in | |
| May | 61°F (16°C) | 0.7 in | |
| June | 66°F (19°C) | 0.2 in | |
| July | 67°F (19°C) | 0.0 in | Driest |
| August | 69°F (20°C) | 0.1 in | Warmest |
| September | 67°F (20°C) | 0.4 in | |
| October | 62°F (17°C) | 1.9 in | |
| November | 54°F (12°C) | 4.8 in | |
| December | 48°F (9°C) | 5.2 in | Coldest |
Petaluma has a seasonal temperature swing of 21°F / from 48°F in December to 69°F in August. Total annual precipitation is 32.8 inches, with January being the wettest month (6.9") and July the driest (0.0").