Pacific Grove, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 9.2 °C (low) to 17.7 °C (high). Annual precipitation averages 455.7 Millimeters. Pacific Grove is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.6 °C | 15.6 °C | 95.5 mm |
| February | 6.9 °C | 15.7 °C | 88.9 mm |
| March | 7.3 °C | 16.2 °C | 69.09 mm |
| April | 7.9 °C | 16.4 °C | 34.04 mm |
| May | 9.5 °C | 17.6 °C | 12.7 mm |
| June | 10.8 °C | 18.6 °C | 3.56 mm |
| July | 12 °C | 19.1 °C | 1.02 mm |
| August | 12.4 °C | 19.6 °C | 1.27 mm |
| September | 11.9 °C | 20.3 °C | 2.03 mm |
| October | 10.3 °C | 20.1 °C | 19.81 mm |
| November | 8 °C | 17.8 °C | 42.93 mm |
| December | 6.2 °C | 15.4 °C | 84.84 mm |
| Annual | 9.2 °C | 17.7 °C | 455.69 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |