Warm-summer Mediterranean
Portola Valley, California
San Mateo County, California · Population 4.3k · 479 ft elevation
Living in Portola Valley
Portola Valley has a warm-summer mediterranean climate: cool summers (July highs around 69°F) and mild winters (January lows around 40°F).
Precipitation is moderate at about 30″ a year, and it essentially never sees snow.
Skies are sunny (71% of possible sunshine). It never gets truly muggy.
Air quality is excellent: a median AQI of 27 and virtually no unhealthy-air days.
There is plenty to explore outdoors around Portola Valley: about 9% 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.
Portola Valley at a glance
- Population
- 4.3k
- Elevation
- 479 ft
- Average daily high
- 64°F39th percentile
- Average daily low
- 44°F41th percentile
- Annual precipitation
- 30″19th percentile
- Annual snowfall
- 0″0th percentile
- Sunshine hours per year
- 3,144 hrs80th percentile
- Median AQI
- 273th percentile
- Median home value
- $2M99th percentile
- Median rent
- $3,501/mo99th percentile
- Median household income
- $250k99th percentile
- Property tax rate
- 0.50%9th percentile
- Top state income-tax rate
- 13.3%
- Sales tax (state + local)
- 8.8%
- Unemployment rate
- 2.2%
- Homes with broadband
- 96%82th percentile
- Walkability index
- 7.126th percentile
- Average commute
- 28 min
- Math proficiency (8th grade)
- 75%89th percentile
- Reading proficiency (8th grade)
- 85%
- Overall natural-hazard risk
- 9986th percentile
- Outdoor access
- 8584th percentile
- Public land within 10 miles
- 16%
- Public land within 30 miles
- 9%
- Mountain relief within 30 miles
- 2,165 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 59°F | 40°F | 5.8″ | — | 201 hrs |
| Feb | 60°F | 41°F | 6.2″ | — | 200 hrs |
| Mar | 61°F | 41°F | 4.3″ | — | 256 hrs |
| Apr | 62°F | 42°F | 2.3″ | — | 293 hrs |
| May | 63°F | 45°F | 0.9″ | — | 322 hrs |
| Jun | 66°F | 47°F | 0.4″ | — | 339 hrs |
| Jul | 69°F | 51°F | 0.1″ | — | 308 hrs |
| Aug | 70°F | 51°F | 0.2″ | — | 284 hrs |
| Sep | 71°F | 49°F | 0.2″ | — | 274 hrs |
| Oct | 68°F | 44°F | 1.3″ | — | 260 hrs |
| Nov | 63°F | 41°F | 2.6″ | — | 219 hrs |
| Dec | 59°F | 39°F | 6.1″ | — | 188 hrs |
Near Portola Valley
- Woodside, CA · 5.2k
- West Menlo Park, CA · 3.4k
- Los Altos Hills, CA · 8.4k
- Palo Alto, CA · 67k
- Stanford, CA · 18k
- Atherton, CA · 7k
- Emerald Lake Hills, CA · 4.4k
- Los Altos, CA · 31k
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