Comptche, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 45.5 °F (low) to 67.4 °F (high). Annual precipitation averages 45.3 Inches. Comptche is located in USDA Plant Hardiness Zone 10a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 41.5 °F | 56.3 °F | 7.78 in. |
| February | 41.6 °F | 56.8 °F | 6.74 in. |
| March | 42.3 °F | 58.5 °F | 6.47 in. |
| April | 43.3 °F | 65.4 °F | 3.55 in. |
| May | 46.1 °F | 67.5 °F | 2.21 in. |
| June | 48.9 °F | 71.9 °F | 0.53 in. |
| July | 50.3 °F | 80.0 °F | 0.06 in. |
| August | 50.8 °F | 80.1 °F | 0.19 in. |
| September | 49.7 °F | 81.4 °F | 0.29 in. |
| October | 47.0 °F | 73.5 °F | 2.19 in. |
| November | 43.7 °F | 60.4 °F | 5.17 in. |
| December | 40.9 °F | 57.4 °F | 10.08 in. |
| Annual | 45.5 °F | 67.4 °F | 45.26 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| 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 | Abnormally Dry |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |