Average annual temperature is 11.6 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: -18.5 °C
Number of sunny days: 228 days
Number of rainy days: 88 days
Number of snow days: 49 days
Look at detailed online map of Alta Hills
* Weather data for Alta Hills United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 9.8 | 6.2 | 12.3 | 25.9 | 27.4 | 31.3 | 38.4 | 36.8 | 34.0 | 25.1 | 19.7 | 12.6 |
| Average daytime temperature (°C) | 1.9 | 2.3 | 5.9 | 13.2 | 22.9 | 25.6 | 34.9 | 31.1 | 26.8 | 18.3 | 10.6 | 6.1 |
| Average temperature (°C) | -0.9 | -1.6 | 2.0 | 7.6 | 16.9 | 19.7 | 27.9 | 25.0 | 20.0 | 12.6 | 6.3 | 2.4 |
| Average night temperature (°C) | -3.9 | -5.5 | -1.5 | 2.4 | 10.8 | 13.6 | 20.9 | 18.7 | 14.0 | 7.3 | 2.5 | -1.2 |
| Absolute minimum temperature (°C) | -18.5 | -15.2 | -6.4 | -9.6 | 3.4 | 9.7 | 15.1 | 15.2 | 6.2 | -4.2 | -5.6 | -7.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.4 | 7.3 | 6.6 | 9.8 | 11.9 | 12.0 | 13.2 | 11.7 | 10.8 | 8.9 | 7.2 | 7.1 |
| Precipitation (mm) | 122 | 49 | 108 | 75 | 11 | 8 | 1 | 28 | 28 | 34 | 53 | 28 |
| Sunny days | 5 | 13 | 7 | 17 | 19 | 19 | 29 | 25 | 24 | 25 | 24 | 21 |
| Rainy days | 10 | 4 | 11 | 9 | 12 | 11 | 2 | 6 | 6 | 6 | 6 | 5 |
| Snow days | 16 | 11 | 13 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The best time to visit Alta Hills during the most sunny months:
The largest precipitation sum in Alta Hills is at