Yermo, CA
Full City Profile · California · San Bernardino County County
3.4
/5.0
B
Good
846
Population
1,302/sq mi density
$56,414
Median Income
$39,363 per capita
$623
Median Rent
13.0% income on rent
68°F
Avg Temperature
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$56,414 median income, unemployment
A+
Affordability
5.0 / 5.0
D
Education
1.6 / 5.0
7.6% bachelor's degree or higher
Yermo enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 49°F in January while summers reach 90°F in July. Annual precipitation totals 3.8 inches. The area receives 0.2 inches of snow annually. Air quality is rated Moderate with a median AQI of 87.
Temperature
49°F Jan (9°C)
90°F Jul (32°C)
| Annual Average | 68.0°F |
| 26% above US avg | |
| January Average | 49°F (9°C) |
| July Average | 90°F (32°C) |
Geography
| Elevation | 1,928 ft (588 m) |
| Area | 0.7 sq mi (1.7 km²) |
| Population Density | 1,302/sq mi |
| Coordinates | 34.9067°N, 116.8233°W |
| Timezone | America/Los_Angeles |
| County | San Bernardino County County |
| Nearest Airport | San Bernardino International (SBD) 61 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 87.0 |
| Rating | Moderate |
| Good Days % | 10.9% |
| Unhealthy Days | 144 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0529 ppm |
| NO₂ (Nitrogen Dioxide) | 22.1 ppb |
| SO₂ (Sulfur Dioxide) | 0.25 ppb |
| CO (Carbon Monoxide) | 0.28 ppm |
| PM2.5 (Fine Particles) | 9.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very High |
| Risk Score | 99.8 / 100 |
| Social Vulnerability | 33.2 / 100 |
| Community Resilience | 20.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | No Rating |
| Earthquake | Very High |
| Wildfire | Very High |
| Flood | Very High |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively Low |
| Lightning | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very High |
| Volcano | Very Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 147 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 49°F (9°C) | 0.6 in | |
| February | 53°F (12°C) | 0.7 in | Wettest |
| March | 59°F (15°C) | 0.4 in | |
| April | 65°F (19°C) | 0.2 in | |
| May | 74°F (23°C) | 0.1 in | |
| June | 84°F (29°C) | 0.0 in | Driest |
| July | 90°F (32°C) | 0.3 in | Warmest |
| August | 89°F (31°C) | 0.2 in | |
| September | 81°F (27°C) | 0.2 in | |
| October | 69°F (20°C) | 0.2 in | |
| November | 56°F (13°C) | 0.3 in | |
| December | 47°F (9°C) | 0.6 in | Coldest |
Yermo has a seasonal temperature swing of 42°F / from 47°F in December to 90°F in July. Total annual precipitation is 3.8 inches, with February being the wettest month (0.7") and June the driest (0.0").