Esparto, CA
Full City Profile · California · Napa County County
3.8
/5.0
B+
Good
3,744
Population
814/sq mi density
$104,706
Median Income
$32,460 per capita
$469,200
Home Value
$462,774 Zillow
$1,439
Median Rent
28.6% income on rent
63°F
Avg Temperature
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$104,706 median income, 2.1% unemployment
A
Affordability
4.2 / 5.0
$469,200 home value, $1,439/mo rent
C
Education
2.4 / 5.0
17.6% bachelor's degree or higher
Esparto enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 47°F in January while summers reach 77°F in July. Annual precipitation totals 23.8 inches. The area receives 0.0 inches of snow annually.
Temperature
47°F Jan (8°C)
77°F Jul (25°C)
| Annual Average | 62.6°F |
| 16% above US avg | |
| January Average | 47°F (8°C) |
| July Average | 77°F (25°C) |
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
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) | 5.2 in | Coldest, Wettest |
| February | 51°F (11°C) | 5.0 in | |
| March | 56°F (13°C) | 3.2 in | |
| April | 61°F (16°C) | 1.4 in | |
| May | 68°F (20°C) | 0.8 in | |
| June | 74°F (23°C) | 0.2 in | |
| July | 77°F (25°C) | 0.0 in | Warmest, Driest |
| August | 77°F (25°C) | 0.0 in | |
| September | 74°F (23°C) | 0.1 in | |
| October | 65°F (19°C) | 0.9 in | |
| November | 54°F (12°C) | 2.2 in | |
| December | 47°F (8°C) | 4.9 in |
Esparto has a seasonal temperature swing of 30°F / from 47°F in January to 77°F in July. Total annual precipitation is 23.8 inches, with January being the wettest month (5.2") and July the driest (0.0").