Naco, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 47.1 °F (low) to 77.6 °F (high). Annual precipitation averages 12.9 Inches. Naco is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.2 °F | 61.0 °F | 0.75 in. |
| February | 34.1 °F | 64.0 °F | 0.76 in. |
| March | 38.5 °F | 70.0 °F | 0.53 in. |
| April | 43.4 °F | 77.7 °F | 0.26 in. |
| May | 51.1 °F | 85.4 °F | 0.26 in. |
| June | 60.8 °F | 93.9 °F | 0.42 in. |
| July | 65.2 °F | 92.2 °F | 3.49 in. |
| August | 63.8 °F | 89.8 °F | 2.71 in. |
| September | 58.7 °F | 87.2 °F | 1.16 in. |
| October | 48.2 °F | 80.2 °F | 0.84 in. |
| November | 38.1 °F | 69.4 °F | 0.71 in. |
| December | 31.7 °F | 60.4 °F | 0.96 in. |
| Annual | 47.1 °F | 77.6 °F | 12.85 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |