Sonoma State University, CA
Full City Profile · California · Sonoma County County
4.7
/5.0
A+
Excellent
1,957
Population
4,660/sq mi density
58°F
Avg Temperature
A+
Overall
4.7 / 5.0
Strong
A+
Education
4.7 / 5.0
46.3% bachelor's degree or higher
Sonoma State University 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. 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 19.
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) |
Geography
| Elevation | 157 ft (48 m) |
| Area | 0.4 sq mi (1.1 km²) |
| Population Density | 4,660/sq mi |
| Coordinates | 38.3406°N, 122.6729°W |
| Timezone | America/Los_Angeles |
| County | Sonoma County County |
| Nearest Airport | Metro Oakland International (OAK) 49 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 19.0 |
| Rating | Good |
| Good Days % | 95.1% |
| Unhealthy Days | 0 |
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
4 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 | 87 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 99 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 73 km |
| 1865 | N. CALIFORNIA | Eruption + Earthquake | - | - | 144 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (71 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 71 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 4.8 in | |
| February | 51°F (10°C) | 5.2 in | Wettest |
| March | 53°F (12°C) | 3.3 in | |
| April | 56°F (13°C) | 1.7 in | |
| May | 60°F (15°C) | 0.9 in | |
| June | 64°F (18°C) | 0.3 in | |
| July | 67°F (19°C) | 0.0 in | Driest |
| August | 67°F (19°C) | 0.1 in | Warmest |
| September | 67°F (19°C) | 0.1 in | |
| October | 62°F (17°C) | 1.3 in | |
| November | 54°F (12°C) | 2.7 in | |
| December | 48°F (9°C) | 5.2 in | Coldest |
Sonoma State University has a seasonal temperature swing of 19°F / from 48°F in December to 67°F in August. Total annual precipitation is 25.6 inches, with February being the wettest month (5.2") and July the driest (0.0").