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Clearlake, CA
Full City Profile · California · Sonoma County County
2.2
/5.0
C
Fair
16,604
Population
1,639/sq mi density
$41,580
Median Income
$19,944 per capita
$204,500
Home Value
$202,950 Zillow
$1,162
Median Rent
40.9% income on rent
57°F
Avg Temperature
326 sunny days/yr
773
Violent Crime/100K
2,987 property/100K
C
Overall
2.2 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.3 / 5.0
$41,580 median income, 8.1% unemployment
B+
Affordability
3.9 / 5.0
$204,500 home value, $1,162/mo rent
F
Safety
1.0 / 5.0
773 violent crimes/100K (103% above avg)
D
Education
1.6 / 5.0
6.9% bachelor's degree or higher
Clearlake enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 44°F in January while summers reach 74°F in July. The area gets 326 sunny days per year. Annual precipitation totals 29.9 inches. The area receives 0.4 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
44°F Jan (7°C)
74°F Jul (23°C)
| Annual Average | 56.9°F |
| 5% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 326 days/yr |
Geography
| Elevation | 1,354 ft (413 m) |
| Area | 10.6 sq mi (27.4 km²) |
| Population Density | 1,639/sq mi |
| Coordinates | 38.9600°N, 122.6332°W |
| Timezone | America/Los_Angeles |
| County | Sonoma County County |
| Nearest Airport | Sacramento International (SMF) 59 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
2 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 | 148 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | — | 141 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Clear Lake (12 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 12 km |
| Lassen Volcanic Center | Stratovolcano | 3,187 m (10,456 ft) | 1917 | 196 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 6.5 in | Coldest, Wettest |
| February | 46°F (8°C) | 5.1 in | |
| March | 49°F (9°C) | 4.1 in | |
| April | 53°F (12°C) | 1.8 in | |
| May | 60°F (16°C) | 0.5 in | |
| June | 67°F (20°C) | 0.2 in | |
| July | 74°F (23°C) | 0.1 in | Warmest, Driest |
| August | 73°F (23°C) | 0.2 in | |
| September | 68°F (20°C) | 0.6 in | |
| October | 60°F (16°C) | 1.9 in | |
| November | 50°F (10°C) | 4.9 in | |
| December | 44°F (7°C) | 5.4 in |
Clearlake has a seasonal temperature swing of 30°F / from 44°F in January to 74°F in July. Total annual precipitation is 31.2 inches, with January being the wettest month (6.5") and July the driest (0.1").