Cold semi-arid
Casa de Oro-Mount Helix, California
San Diego County, California · Population 20k · 840 ft elevation
Living in Casa de Oro-Mount Helix
Casa de Oro-Mount Helix has a cold semi-arid climate: hot summers (July highs around 85°F) and mild winters (January lows around 41°F).
Precipitation is dry at about 12″ a year, and it essentially never sees snow.
Skies are exceptionally sunny (86% of possible sunshine). It never gets truly muggy.
Air quality is poor: a median AQI of 67, with about 33 unhealthy-air days in the latest year.
Casa de Oro-Mount Helix is an outdoor hub: about 21% of the land within 30 miles is public (parks, national forest and the like), and the terrain rises and falls about 4,000 ft around town.
Casa de Oro-Mount Helix at a glance
- Population
- 20k
- Elevation
- 840 ft
- Average daily high
- 76°F78th percentile
- Average daily low
- 52°F76th percentile
- Annual precipitation
- 12″5th percentile
- Annual snowfall
- 0″0th percentile
- Sunshine hours per year
- 3,845 hrs98th percentile
- Median AQI
- 6796th percentile
- Median home value
- $907k96th percentile
- Median rent
- $1,970/mo86th percentile
- Median household income
- $123k86th percentile
- Property tax rate
- 0.63%19th percentile
- Top state income-tax rate
- 13.3%
- Sales tax (state + local)
- 8.8%
- Unemployment rate
- 6.2%
- Homes with broadband
- 96%82th percentile
- Walkability index
- 10.167th percentile
- Average commute
- 27 min
- Math proficiency (8th grade)
- 28%22th percentile
- Reading proficiency (8th grade)
- 44%
- Overall natural-hazard risk
- 10093th percentile
- Outdoor access
- 9392th percentile
- Public land within 10 miles
- 14%
- Public land within 30 miles
- 21%
- Mountain relief within 30 miles
- 4,003 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 68°F | 41°F | 2.3″ | — | 250 hrs |
| Feb | 68°F | 43°F | 2.6″ | — | 236 hrs |
| Mar | 70°F | 47°F | 1.9″ | — | 307 hrs |
| Apr | 73°F | 50°F | 0.8″ | — | 335 hrs |
| May | 75°F | 55°F | 0.3″ | — | 385 hrs |
| Jun | 80°F | 58°F | 0.1″ | — | 404 hrs |
| Jul | 85°F | 62°F | 0.2″ | — | 393 hrs |
| Aug | 88°F | 64°F | 0.0″ | — | 380 hrs |
| Sep | 86°F | 61°F | 0.1″ | — | 336 hrs |
| Oct | 80°F | 55°F | 0.5″ | — | 311 hrs |
| Nov | 74°F | 46°F | 1.0″ | — | 263 hrs |
| Dec | 67°F | 41°F | 1.8″ | — | 242 hrs |
Near Casa de Oro-Mount Helix
- Spring Valley, CA · 32k
- El Cajon, CA · 105k
- Rancho San Diego, CA · 22k
- La Mesa, CA · 61k
- Bostonia, CA · 17k
- La Presa, CA · 37k
- Lemon Grove, CA · 27k
- Granite Hills, CA · 3.9k
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