Sand City, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 48.7 °F (low) to 63.5 °F (high). Annual precipitation averages 16.8 Inches. Sand City is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 43.9 °F | 59.9 °F | 3.52 in. |
| February | 44.7 °F | 60.2 °F | 3.42 in. |
| March | 45.5 °F | 60.9 °F | 2.65 in. |
| April | 46.4 °F | 61.4 °F | 1.21 in. |
| May | 49.5 °F | 63.4 °F | 0.45 in. |
| June | 51.9 °F | 65.0 °F | 0.11 in. |
| July | 54.0 °F | 65.6 °F | 0.04 in. |
| August | 54.6 °F | 66.8 °F | 0.03 in. |
| September | 53.5 °F | 67.7 °F | 0.07 in. |
| October | 50.7 °F | 67.6 °F | 0.69 in. |
| November | 46.5 °F | 63.8 °F | 1.59 in. |
| December | 43.3 °F | 59.9 °F | 3.02 in. |
| Annual | 48.7 °F | 63.5 °F | 16.8 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 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |