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San Jacinto, CA
Full City Profile · California · San Diego County County
2.7
/5.0
C+
Fair
54,756
Population
2,117/sq mi density
$78,281
Median Income
$26,286 per capita
$391,600
Home Value
$479,919 Zillow
$1,633
Median Rent
38.1% income on rent
65°F
Avg Temperature
330 sunny days/yr
218
Violent Crime/100K
3,310 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$78,281 median income, 5.2% unemployment
B+
Affordability
3.9 / 5.0
$391,600 home value, $1,633/mo rent
F
Safety
1.0 / 5.0
218 violent crimes/100K
C
Education
2.1 / 5.0
13.9% bachelor's degree or higher
San Jacinto enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 53°F in January while summers reach 79°F in July. The area gets 330 sunny days per year. Annual precipitation totals 12.2 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 48.
Temperature
53°F Jan (12°C)
79°F Jul (26°C)
| Annual Average | 65.0°F |
| 20% above US avg | |
| January Average | 53°F (12°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 330 days/yr |
Geography
| Elevation | 1,490 ft (454 m) |
| Area | 26.1 sq mi (67.7 km²) |
| Population Density | 2,117/sq mi |
| Coordinates | 33.7989°N, 116.9959°W |
| Timezone | America/Los_Angeles |
| County | San Diego County County |
| Nearest Airport | San Bernardino International (SBD) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0453 ppm |
| NO₂ (Nitrogen Dioxide) | 13.7 ppb |
| SO₂ (Sulfur Dioxide) | 0.07 ppb |
| CO (Carbon Monoxide) | 0.50 ppm |
| PM2.5 (Fine Particles) | 8.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.7 / 100 |
| Social Vulnerability | 24.8 / 100 |
| Community Resilience | 8.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively High |
| Wildfire | Very High |
| Flood | Very High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively High |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Relatively High |
| Coastal Flood | Relatively Moderate |
| Tsunami | Relatively Low |
| Volcano | Very 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: 1.2 m (4 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1862 | S. CALIFORNIA | Eruption + Earthquake | 1.2 m | — | 124 km |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 149 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | — | — | 107 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Salton Buttes (144 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Salton Buttes | Lava dome(s) | -40 m (-131 ft) | 210 | 144 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (12°C) | 2.4 in | Wettest |
| February | 53°F (11°C) | 2.4 in | |
| March | 54°F (12°C) | 2.1 in | |
| April | 59°F (15°C) | 0.9 in | |
| May | 65°F (18°C) | 0.4 in | |
| June | 72°F (22°C) | 0.1 in | Driest |
| July | 79°F (26°C) | 0.2 in | Warmest |
| August | 79°F (26°C) | 0.4 in | |
| September | 75°F (24°C) | 0.6 in | |
| October | 67°F (19°C) | 0.4 in | |
| November | 57°F (14°C) | 1.4 in | |
| December | 51°F (11°C) | 1.7 in | Coldest |
San Jacinto has a seasonal temperature swing of 28°F / from 51°F in December to 79°F in July. Total annual precipitation is 13.0 inches, with January being the wettest month (2.4") and June the driest (0.1").