Anchor Bay, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 47.8 °F (low) to 59.8 °F (high). Annual precipitation averages 40.5 Inches. 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 | 44.5 °F | 55.8 °F | 7.25 in. |
| February | 44.8 °F | 56.2 °F | 6.59 in. |
| March | 45.3 °F | 56.6 °F | 5.53 in. |
| April | 45.9 °F | 58.1 °F | 3.19 in. |
| May | 48.0 °F | 59.3 °F | 1.75 in. |
| June | 50.0 °F | 61.8 °F | 0.59 in. |
| July | 50.8 °F | 62.1 °F | 0.04 in. |
| August | 51.8 °F | 63.6 °F | 0.1 in. |
| September | 51.6 °F | 64.4 °F | 0.21 in. |
| October | 49.8 °F | 63.8 °F | 1.94 in. |
| November | 47.0 °F | 59.6 °F | 4.46 in. |
| December | 44.3 °F | 56.8 °F | 8.87 in. |
| Annual | 47.8 °F | 59.8 °F | 40.52 in. |
| 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 : 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 |