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Castaic, CA
Full City Profile · California · Los Angeles County County
3.4
/5.0
B
Good
18,479
Population
2,545/sq mi density
$132,153
Median Income
$50,338 per capita
$710,400
Home Value
$796,215 Zillow
$1,751
Median Rent
46.4% income on rent
66°F
Avg Temperature
330 sunny days/yr
148
Violent Crime/100K
1,178 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$132,153 median income, 3.5% unemployment
B+
Affordability
3.6 / 5.0
$710,400 home value, $1,751/mo rent
F
Safety
1.0 / 5.0
148 violent crimes/100K
A
Education
4.3 / 5.0
41.4% bachelor's degree or higher
Castaic enjoys a temperate climate with an average annual temperature of 66°F (19°C). Winters average 55°F in January while summers reach 79°F in July. The area gets 330 sunny days per year. Annual precipitation totals 16.8 inches. The area receives 0.1 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
55°F Jan (13°C)
79°F Jul (26°C)
| Annual Average | 65.5°F |
| 21% above US avg | |
| January Average | 55°F (13°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 1,545 ft (471 m) |
| Area | 7.3 sq mi (18.9 km²) |
| Population Density | 2,545/sq mi |
| Coordinates | 34.4774°N, 118.6327°W |
| Timezone | America/Los_Angeles |
| County | Los Angeles County County |
| Nearest Airport | Bob Hope (BUR) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0482 ppm |
| NO₂ (Nitrogen Dioxide) | 17.4 ppb |
| SO₂ (Sulfur Dioxide) | 0.32 ppb |
| CO (Carbon Monoxide) | 0.32 ppm |
| PM2.5 (Fine Particles) | 10.0 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 100.0 / 100 |
| Social Vulnerability | 55.4 / 100 |
| Community Resilience | 13.6 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | No Rating |
| Earthquake | Very High |
| Wildfire | Very High |
| Flood | Very High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Relatively High |
| Coastal Flood | Relatively High |
| Tsunami | Relatively Low |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
4 tsunamis recorded within 500 km. Highest wave on record: 3.4 m (11 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1812 | S. CALIFORNIA | Eruption + Earthquake | 3.4 m | 1 | 120 km |
| 1930 | S. CALIFORNIA | Eruption + Earthquake | 3.1 m | 1 | 50 km |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 31 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | — | — | 65 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 55°F (13°C) | 3.2 in | |
| February | 53°F (12°C) | 3.3 in | Wettest |
| March | 55°F (13°C) | 2.4 in | |
| April | 59°F (15°C) | 1.1 in | |
| May | 64°F (18°C) | 0.2 in | |
| June | 70°F (21°C) | 0.0 in | Driest |
| July | 79°F (26°C) | 0.0 in | Warmest |
| August | 77°F (25°C) | 0.1 in | |
| September | 73°F (23°C) | 0.2 in | |
| October | 67°F (19°C) | 0.4 in | |
| November | 57°F (14°C) | 2.4 in | |
| December | 52°F (11°C) | 2.2 in | Coldest |
Castaic has a seasonal temperature swing of 27°F / from 52°F in December to 79°F in July. Total annual precipitation is 15.6 inches, with February being the wettest month (3.3") and June the driest (0.0").