Alhambra, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 54.5 °F (low) to 78 °F (high). Annual precipitation averages 18.1 Inches. Alhambra is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 46.5 °F | 69.0 °F | 4.27 in. |
| February | 47.4 °F | 69.1 °F | 4.54 in. |
| March | 49.6 °F | 71.2 °F | 3.18 in. |
| April | 52.1 °F | 75.9 °F | 0.88 in. |
| May | 56.0 °F | 77.8 °F | 0.45 in. |
| June | 59.6 °F | 82.1 °F | 0.12 in. |
| July | 63.2 °F | 87.0 °F | 0.04 in. |
| August | 63.9 °F | 89.4 °F | 0.02 in. |
| September | 62.4 °F | 88.2 °F | 0.15 in. |
| October | 57.4 °F | 82.5 °F | 0.66 in. |
| November | 50.5 °F | 74.9 °F | 0.83 in. |
| December | 45.6 °F | 68.3 °F | 2.92 in. |
| Annual | 54.5 °F | 78 °F | 18.06 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : 30°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |