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Manchester, CA
Full City Profile · California · Mendocino County County
2.8
/5.0
C+
Fair
234
Population
89/sq mi density
$60,873
Median Income
$29,847 per capita
$407,100
Home Value
$625,358 Zillow
60°F
Avg Temperature
302 sunny days/yr
373
Violent Crime/100K
3,533 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$60,873 median income, 5.9% unemployment
C+
Affordability
2.9 / 5.0
$407,100 home value, /mo rent
F
Safety
1.0 / 5.0
373 violent crimes/100K
B+
Education
3.7 / 5.0
0.0% bachelor's degree or higher
Manchester enjoys a temperate climate with an average annual temperature of 60°F (16°C). Winters average 48°F in January while summers reach 75°F in July. The area gets 302 sunny days per year. Annual precipitation totals 34.8 inches. Air quality is rated Good with a median AQI of 48.
Temperature
48°F Jan (9°C)
75°F Jul (24°C)
| Annual Average | 59.8°F |
| 11% above US avg | |
| January Average | 48°F (9°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 302 days/yr |
Geography
| Elevation | 70 ft (21 m) |
| Area | 2.6 sq mi (6.8 km²) |
| Population Density | 89/sq mi |
| Coordinates | 38.9744°N, 123.6910°W |
| Timezone | America/Los_Angeles |
| County | Mendocino County County |
| Nearest Airport | Chico Regional (CIC) 111 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 48.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0340 ppm |
| PM2.5 (Fine Particles) | 9.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 94.3 / 100 |
| Social Vulnerability | 76.8 / 100 |
| Community Resilience | 39.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively High |
| Wildfire | Relatively High |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Drought | Relatively High |
| Cold Wave | No Rating |
| Landslide | Relatively High |
| Coastal Flood | Relatively Low |
| Tsunami | Very Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
1 volcano within 200 km. Closest: Clear Lake (80 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Clear Lake | Volcanic field | 1,439 m (4,721 ft) | Unknown | 80 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 48°F (9°C) | 7.8 in | Coldest, Wettest |
| February | 50°F (10°C) | 6.0 in | |
| March | 50°F (10°C) | 6.0 in | |
| April | 52°F (11°C) | 2.9 in | |
| May | 54°F (12°C) | 0.9 in | |
| June | 56°F (14°C) | 0.3 in | |
| July | 75°F (24°C) | 0.2 in | Warmest, Driest |
| August | 59°F (15°C) | 0.4 in | |
| September | 59°F (15°C) | 0.8 in | |
| October | 57°F (14°C) | 2.8 in | |
| November | 53°F (11°C) | 6.8 in | |
| December | 48°F (9°C) | 6.9 in |
Manchester has a seasonal temperature swing of 27°F / from 48°F in January to 75°F in July. Total annual precipitation is 41.6 inches, with January being the wettest month (7.8") and July the driest (0.2").