Clipper Mills, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 44.9 °F (low) to 67.2 °F (high). Annual precipitation averages 77.8 Inches. Clipper Mills is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.9 °F | 52.1 °F | 14.12 in. |
| February | 34.8 °F | 53.0 °F | 13.32 in. |
| March | 36.7 °F | 56.5 °F | 11.17 in. |
| April | 39.3 °F | 60.9 °F | 6.13 in. |
| May | 46.2 °F | 69.3 °F | 3.79 in. |
| June | 53.4 °F | 78.7 °F | 1.16 in. |
| July | 60.0 °F | 86.9 °F | 0.11 in. |
| August | 59.1 °F | 86.8 °F | 0.18 in. |
| September | 54.6 °F | 82.1 °F | 0.51 in. |
| October | 46.8 °F | 71.1 °F | 4.1 in. |
| November | 38.8 °F | 58.1 °F | 7.93 in. |
| December | 34.3 °F | 50.4 °F | 15.25 in. |
| Annual | 44.9 °F | 67.2 °F | 77.77 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |