Oak Glen, CA
Full City Profile · California · San Bernardino County County
3.9
/5.0
B+
Good
387
Population
26/sq mi density
$101,250
Median Income
$63,557 per capita
$867,600
Home Value
$568,650 Zillow
65°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$101,250 median income, 0.0% unemployment
D
Affordability
1.8 / 5.0
$867,600 home value, /mo rent
A+
Education
4.8 / 5.0
46.9% bachelor's degree or higher
Oak Glen enjoys a temperate climate with an average annual temperature of 65°F (18°C). Winters average 54°F in January while summers reach 79°F in July. Annual precipitation totals 12.9 inches. The area receives 0.0 inches of snow annually. Air quality is rated Moderate with a median AQI of 87.
Temperature
54°F Jan (12°C)
79°F Jul (26°C)
| Annual Average | 65.2°F |
| 21% above US avg | |
| January Average | 54°F (12°C) |
| July Average | 79°F (26°C) |
Geography
| Elevation | 5,280 ft (1,609 m) |
| Area | 14.9 sq mi (38.5 km²) |
| Population Density | 26/sq mi |
| Coordinates | 34.0410°N, 116.9623°W |
| Timezone | America/Los_Angeles |
| County | San Bernardino County County |
| Nearest Airport | San Bernardino International (SBD) 16 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
2 tsunamis recorded within 500 km. Highest wave on record: 0.1 m (0 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1994 | WEST COAST, USA | Earthquake | 0.1 m | 57 | 146 km |
| 1855 | S. CALIFORNIA | Eruption + Earthquake | - | - | 105 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Salton Buttes (156 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Salton Buttes | Lava dome(s) | -40 m (-131 ft) | 210 | 156 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 54°F (12°C) | 2.8 in | |
| February | 55°F (13°C) | 3.0 in | Wettest |
| March | 58°F (14°C) | 2.0 in | |
| April | 62°F (17°C) | 0.9 in | |
| May | 66°F (19°C) | 0.4 in | |
| June | 72°F (22°C) | 0.1 in | |
| July | 79°F (26°C) | 0.1 in | |
| August | 80°F (26°C) | 0.1 in | Warmest, Driest |
| September | 76°F (24°C) | 0.1 in | |
| October | 68°F (20°C) | 0.5 in | |
| November | 60°F (16°C) | 0.9 in | |
| December | 53°F (12°C) | 2.0 in | Coldest |
Oak Glen has a seasonal temperature swing of 26°F / from 53°F in December to 80°F in August. Total annual precipitation is 12.9 inches, with February being the wettest month (3.0") and August the driest (0.1").