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Isleton, CA
Full City Profile · California · Solano County County
2.4
/5.0
C
Fair
649
Population
1,475/sq mi density
$59,250
Median Income
$28,481 per capita
$316,900
Home Value
$410,265 Zillow
$1,164
Median Rent
27.3% income on rent
62°F
Avg Temperature
326 sunny days/yr
825
Violent Crime/100K
471 property/100K
C
Overall
2.4 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$59,250 median income, 7.8% unemployment
B+
Affordability
3.7 / 5.0
$316,900 home value, $1,164/mo rent
F
Safety
1.0 / 5.0
825 violent crimes/100K (117% above avg)
D
Education
1.9 / 5.0
11.6% bachelor's degree or higher
Isleton enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 48°F in January while summers reach 77°F in July. The area gets 326 sunny days per year. Annual precipitation totals 24.8 inches. Air quality is rated Good with a median AQI of 48.
Temperature
48°F Jan (9°C)
77°F Jul (25°C)
| Annual Average | 62.1°F |
| 15% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 77°F (25°C) |
| Sunny Days | 326 days/yr |
Geography
| Elevation | -1 ft (0 m) |
| Area | 0.5 sq mi (1.3 km²) |
| Population Density | 1,475/sq mi |
| Coordinates | 38.1613°N, 121.6050°W |
| Timezone | America/Los_Angeles |
| County | Solano County County |
| Nearest Airport | Sacramento International (SMF) 37 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0361 ppm |
| NO₂ (Nitrogen Dioxide) | 9.0 ppb |
| SO₂ (Sulfur Dioxide) | 0.34 ppb |
| CO (Carbon Monoxide) | 0.39 ppm |
| PM2.5 (Fine Particles) | 6.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.0 / 100 |
| Social Vulnerability | 25.2 / 100 |
| Community Resilience | 71.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Relatively High |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Relatively High |
| Tsunami | Very Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
5 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 | 67 km |
| 1989 | N. CALIFORNIA | Earthquake | 1.0 m | 62 | 128 km |
| 1856 | N. CALIFORNIA | Eruption + Earthquake | 0.6 m | — | 96 km |
| 1906 | N. CALIFORNIA | Eruption + Earthquake | 0.1 m | — | 94 km |
| 1865 | N. CALIFORNIA | Eruption + Earthquake | — | — | 110 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (135 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 135 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 3.1 in | Wettest |
| February | 51°F (10°C) | 2.6 in | |
| March | 55°F (13°C) | 2.1 in | |
| April | 59°F (15°C) | 0.8 in | |
| May | 65°F (18°C) | 0.4 in | |
| June | 70°F (21°C) | 0.1 in | |
| July | 77°F (25°C) | 0.0 in | Warmest, Driest |
| August | 71°F (22°C) | 0.1 in | |
| September | 69°F (20°C) | 0.2 in | |
| October | 63°F (17°C) | 0.9 in | |
| November | 53°F (12°C) | 2.1 in | |
| December | 46°F (8°C) | 2.1 in | Coldest |
Isleton has a seasonal temperature swing of 31°F / from 46°F in December to 77°F in July. Total annual precipitation is 14.4 inches, with January being the wettest month (3.1") and July the driest (0.0").