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| Back to California, United States. Do you have any pictures of this city? ![]() Planning a vacation? Current weather forecast for Altadena, CA Elevation: 1342 feet County: Los Angeles Land area: 8.7 square miles Zip codes: 91001. Median resident age: 37.6 years New: Altadena, CA residents, houses, and apartments details Races in Altadena:
Ancestries: German (7.8%), English (7.4%), Irish (7.4%), Italian (3.4%), United States (2.8%), Subsaharan African (2.0%). |
![]() For population 25 years and over in Altadena
For population 15 years and over in Altadena CDP
18.7% Foreign born (9.1% Latin America, 6.0% Asia, 2.3% Europe). |
![]() Nearest city with pop. 50,000+: Pasadena, CA (2.3 miles, pop. 133,936). Nearest city with pop. 200,000+: Los Angeles, CA (18.0 miles, pop. 3,694,820). Nearest cities: Pasadena, CA (2.3 miles), La Canada Flintridge, CA (4.6 miles), San Marino, CA (4.8 miles), East Pasadena, CA (5.2 miles), South Pasadena, CA (5.4 miles), Sierra Madre, CA (6.0 miles), East San Gabriel, CA (6.0 miles), San Gabriel, CA (7.0 miles). Industries providing employment: Educational,health and social services (27.6%), Professional,scientific,management,administrative,and waste management services (14.4%). |
Based on data reported by over 4,000 weather stations
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Average temp. (°F) | 53.5 | 55.1 | 56.4 | 60.3 | 64.2 | 70.0 | 74.8 | 75.5 | 73.1 | 66.8 | 58.7 | 53.8 |
| High temperature (°F) | 64.9 | 66.8 | 67.9 | 72.7 | 76.0 | 82.5 | 87.7 | 88.5 | 85.9 | 79.5 | 71.0 | 65.4 |
| Low temperature (°F) | 42.1 | 43.5 | 44.8 | 47.9 | 52.4 | 57.5 | 61.8 | 62.4 | 60.2 | 54.1 | 46.3 | 42.0 |
| Precipitation (in) | 4.7 | 5.2 | 4.7 | 1.5 | 0.6 | 0.2 | 0.1 | 0.2 | 0.6 | 0.7 | 1.8 | 2.6 |
Based on data reported by main weather stations
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Days with precip. | 6 | 5 | 5 | 3 | 1 | 0 | 0 | 0 | 1 | 2 | 3 | 5 |
| Wind speed (mph) | 5.2 | 6.0 | 6.7 | 7.4 | 7.1 | 7.0 | 6.8 | 6.6 | 6.2 | 5.6 | 5.2 | 5.0 |
| Morning humidity (%) | 76 | 78 | 80 | 80 | 80 | 81 | 81 | 81 | 82 | 80 | 79 | 77 |
| Afternoon humidity (%) | 53 | 54 | 55 | 51 | 54 | 55 | 53 | 52 | 54 | 54 | 53 | 52 |
| Sunshine (%) | 70 | 71 | 72 | 72 | 65 | 65 | 73 | 74 | 74 | 72 | 75 | 71 |
| Days clear of clouds | 12 | 10 | 11 | 12 | 10 | 12 | 18 | 19 | 15 | 13 | 13 | 13 |
| Partly cloudy days | 8 | 7 | 9 | 10 | 13 | 12 | 11 | 10 | 11 | 11 | 8 | 8 |
| Cloudy days | 11 | 11 | 11 | 8 | 8 | 6 | 2 | 2 | 4 | 7 | 8 | 10 |
| Snowfall (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
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