Anchor Bay, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 8.8 °C (low) to 15.5 °C (high). Annual precipitation averages 1029.2 Millimeters. Anchor Bay is located in USDA Plant Hardiness Zone 10a. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 11 - Jan. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.9 °C | 13.2 °C | 184.15 mm |
| February | 7.1 °C | 13.4 °C | 167.39 mm |
| March | 7.4 °C | 13.7 °C | 140.46 mm |
| April | 7.7 °C | 14.5 °C | 81.03 mm |
| May | 8.9 °C | 15.2 °C | 44.45 mm |
| June | 10 °C | 16.6 °C | 14.99 mm |
| July | 10.4 °C | 16.7 °C | 1.02 mm |
| August | 11 °C | 17.6 °C | 2.54 mm |
| September | 10.9 °C | 18 °C | 5.33 mm |
| October | 9.9 °C | 17.7 °C | 49.28 mm |
| November | 8.3 °C | 15.3 °C | 113.28 mm |
| December | 6.8 °C | 13.8 °C | 225.3 mm |
| Annual | 8.8 °C | 15.5 °C | 1029.22 mm |
| Average First Frost Date | Jan. 11 - Jan. 20 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |