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Esparto, CA
Full City Profile · California · Napa County County
3.1
/5.0
B
Good
3,744
Population
814/sq mi density
$104,706
Median Income
$32,460 per capita
$469,200
Home Value
$452,468 Zillow
$1,439
Median Rent
28.6% income on rent
57°F
Avg Temperature
302 sunny days/yr
302
Violent Crime/100K
2,226 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$104,706 median income, 1.6% unemployment
A
Affordability
4.2 / 5.0
$469,200 home value, $1,439/mo rent
F
Safety
1.0 / 5.0
302 violent crimes/100K
C
Education
2.4 / 5.0
17.6% bachelor's degree or higher
Esparto enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 47°F in January while summers reach 69°F in July. The area gets 302 sunny days per year. Annual precipitation totals 39.7 inches. Air quality is rated Good with a median AQI of 48.
Temperature
47°F Jan (8°C)
69°F Jul (21°C)
| Annual Average | 57.4°F |
| 6% above US avg | |
| January Average | 47°F (8°C) |
| July Average | 69°F (21°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 200 ft (61 m) |
| Area | 4.6 sq mi (11.9 km²) |
| Population Density | 814/sq mi |
| Coordinates | 38.6934°N, 122.0240°W |
| Timezone | America/Los_Angeles |
| County | Napa County County |
| Nearest Airport | Sacramento International (SMF) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 95.3 / 100 |
| Social Vulnerability | 38.5 / 100 |
| Community Resilience | 76.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| 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 High |
| Coastal Flood | Relatively Moderate |
| Tsunami | Very 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 | 111 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | - | 135 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | - | 118 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (72 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 72 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 47°F (8°C) | 4.7 in | Wettest |
| February | 50°F (10°C) | 3.8 in | |
| March | 53°F (12°C) | 3.1 in | |
| April | 58°F (15°C) | 1.2 in | |
| May | 66°F (19°C) | 0.4 in | |
| June | 73°F (23°C) | 0.2 in | |
| July | 69°F (21°C) | 0.0 in | Driest |
| August | 77°F (25°C) | 0.1 in | Warmest |
| September | 73°F (23°C) | 0.4 in | |
| October | 64°F (18°C) | 1.3 in | |
| November | 53°F (12°C) | 3.4 in | |
| December | 46°F (8°C) | 3.7 in | Coldest |
Esparto has a seasonal temperature swing of 31°F / from 46°F in December to 77°F in August. Total annual precipitation is 22.2 inches, with January being the wettest month (4.7") and July the driest (0.0").