Santa Barbara, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 52.9 °F (low) to 68.6 °F (high). Annual precipitation averages 19.2 Inches. Santa Barbara is located in USDA Plant Hardiness Zone 10b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 47.3 °F | 63.7 °F | 4.54 in. |
| February | 47.7 °F | 63.3 °F | 4.51 in. |
| March | 49.2 °F | 63.8 °F | 3.49 in. |
| April | 50.6 °F | 67.5 °F | 1.01 in. |
| May | 53.3 °F | 68.8 °F | 0.41 in. |
| June | 56.2 °F | 70.2 °F | 0.12 in. |
| July | 58.7 °F | 73.3 °F | 0.02 in. |
| August | 59.0 °F | 74.3 °F | 0.01 in. |
| September | 58.6 °F | 74.7 °F | 0.06 in. |
| October | 55.7 °F | 72.7 °F | 0.83 in. |
| November | 51.0 °F | 67.7 °F | 1.4 in. |
| December | 47.1 °F | 63.5 °F | 2.8 in. |
| Annual | 52.9 °F | 68.6 °F | 19.2 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 35°F to 30°F |
| Plant Hardiness Zone - 2012 | Zone 10a : 30°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |