Warm-summer Mediterranean
Castro Valley, California
Alameda County, California · Population 65k · 161 ft elevation
Living in Castro Valley
Castro Valley has a warm-summer mediterranean climate: pleasantly warm summers (July highs around 74°F) and mild winters (January lows around 43°F).
Precipitation is dry at about 16″ a year, and it essentially never sees snow.
Skies are exceptionally sunny (81% of possible sunshine). It never gets truly muggy.
Air quality is moderate: a median AQI of 49, with about 1 unhealthy-air day in the latest year.
There is plenty to explore outdoors around Castro Valley: about 10% of the land within 30 miles is public (parks, national forest and the like), and the terrain rises and falls about 2,200 ft around town.
Castro Valley at a glance
- Population
- 65k
- Elevation
- 161 ft
- Average daily high
- 68°F58th percentile
- Average daily low
- 50°F69th percentile
- Annual precipitation
- 16″10th percentile
- Annual snowfall
- 0″0th percentile
- Sunshine hours per year
- 3,664 hrs94th percentile
- Median AQI
- 4982th percentile
- Median home value
- $1.1M97th percentile
- Median rent
- $2,499/mo95th percentile
- Median household income
- $138k90th percentile
- Property tax rate
- 0.72%28th percentile
- Top state income-tax rate
- 13.3%
- Sales tax (state + local)
- 8.8%
- Unemployment rate
- 3.8%
- Homes with broadband
- 96%82th percentile
- Walkability index
- 13.185th percentile
- Average commute
- 34 min
- Math proficiency (8th grade)
- 58%70th percentile
- Reading proficiency (8th grade)
- 65%
- Overall natural-hazard risk
- 10093th percentile
- Outdoor access
- 8079th percentile
- Public land within 10 miles
- 3%
- Public land within 30 miles
- 10%
- Mountain relief within 30 miles
- 2,198 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 59°F | 43°F | 2.9″ | — | 193 hrs |
| Feb | 62°F | 45°F | 3.1″ | — | 207 hrs |
| Mar | 64°F | 47°F | 2.4″ | — | 268 hrs |
| Apr | 66°F | 49°F | 1.2″ | — | 308 hrs |
| May | 69°F | 52°F | 0.6″ | — | 378 hrs |
| Jun | 74°F | 55°F | 0.1″ | — | 413 hrs |
| Jul | 74°F | 57°F | 0.0″ | — | 432 hrs |
| Aug | 76°F | 58°F | 0.1″ | — | 402 hrs |
| Sep | 77°F | 57°F | 0.1″ | — | 346 hrs |
| Oct | 73°F | 53°F | 0.8″ | — | 302 hrs |
| Nov | 65°F | 47°F | 1.5″ | — | 229 hrs |
| Dec | 59°F | 43°F | 3.2″ | — | 188 hrs |
Near Castro Valley
- Fairview, CA · 10k
- Cherryland, CA · 15k
- Ashland, CA · 23k
- San Lorenzo, CA · 29k
- San Leandro, CA · 89k
- Hayward, CA · 159k
- Union City, CA · 68k
- San Ramon, CA · 86k
Largest places in California
- Los Angeles, CA · 3.9M
- San Diego, CA · 1.4M
- San Jose, CA · 990k
- San Francisco, CA · 836k
- Fresno, CA · 544k
- Sacramento, CA · 525k
- Long Beach, CA · 458k
- Oakland, CA · 438k
Sources: NOAA climate normals, NASA POWER, EPA air quality, U.S. Census Bureau, FEMA, FBI, EPA walkability and EDFacts. Methodology