Acampo, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 48 °F (low) to 74.2 °F (high). Annual precipitation averages 17.9 Inches. Acampo is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.6 °F | 55.8 °F | 3.58 in. |
| February | 40.8 °F | 61.1 °F | 3.25 in. |
| March | 43.6 °F | 66.3 °F | 2.54 in. |
| April | 46.4 °F | 72.6 °F | 1.5 in. |
| May | 51.2 °F | 79.5 °F | 0.75 in. |
| June | 55.5 °F | 86.6 °F | 0.19 in. |
| July | 58.0 °F | 91.0 °F | 0.01 in. |
| August | 57.9 °F | 90.2 °F | 0.04 in. |
| September | 55.5 °F | 87.5 °F | 0.11 in. |
| October | 49.0 °F | 78.3 °F | 0.89 in. |
| November | 41.9 °F | 65.1 °F | 1.7 in. |
| December | 37.9 °F | 56.1 °F | 3.38 in. |
| Annual | 48 °F | 74.2 °F | 17.94 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°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 |