Monument Hills, CA
Full City Profile · California · Yolo County County
4.8
/5.0
A+
Excellent
1,500
Population
376/sq mi density
$240,833
Median Income
$121,085 per capita
$903,200
Home Value
$549,728 Zillow
62°F
Avg Temperature
A+
Overall
4.8 / 5.0
Strong
A+
Economy
5.0 / 5.0
$240,833 median income, 1.6% unemployment
A+
Affordability
4.6 / 5.0
$903,200 home value, /mo rent
A+
Education
4.9 / 5.0
49.1% bachelor's degree or higher
Monument Hills enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 47°F in January while summers reach 77°F in July. Annual precipitation totals 20.5 inches. The area receives 0.0 inches of snow annually. Air quality is rated Good with a median AQI of 45.
Temperature
47°F Jan (8°C)
77°F Jul (25°C)
| Annual Average | 62.2°F |
| 15% above US avg | |
| January Average | 47°F (8°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 135 ft (41 m) |
| Area | 1.6 sq mi (4.0 km²) |
| Population Density | 376/sq mi |
| Coordinates | 38.6641°N, 121.8754°W |
| Timezone | America/Los_Angeles |
| County | Yolo County County |
| Nearest Airport | Sacramento International (SMF) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 45.0 |
| Rating | Good |
| Good Days % | 65.0% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0410 ppm |
| NO₂ (Nitrogen Dioxide) | 5.7 ppb |
| PM2.5 (Fine Particles) | 7.8 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 91.4 / 100 |
| Social Vulnerability | 24.2 / 100 |
| Community Resilience | 69.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Very High |
| Cold Wave | No Rating |
| Landslide | 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: 4.5 m (15 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1868 | N. CALIFORNIA | Eruption + Earthquake | 4.5 m | 30 | 109 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 135 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 120 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (85 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 85 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (8°C) | 4.5 in | Coldest, Wettest |
| February | 51°F (11°C) | 4.2 in | |
| March | 56°F (13°C) | 2.8 in | |
| April | 60°F (16°C) | 1.3 in | |
| May | 67°F (19°C) | 0.7 in | |
| June | 73°F (23°C) | 0.2 in | |
| July | 77°F (25°C) | 0.0 in | Warmest, Driest |
| August | 76°F (24°C) | 0.0 in | |
| September | 73°F (23°C) | 0.2 in | |
| October | 65°F (18°C) | 0.8 in | |
| November | 54°F (12°C) | 2.0 in | |
| December | 47°F (8°C) | 3.8 in |
Monument Hills has a seasonal temperature swing of 30°F / from 47°F in January to 77°F in July. Total annual precipitation is 20.5 inches, with January being the wettest month (4.5") and July the driest (0.0").