Carefree, Arizona has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 57.7 °F (low) to 82.6 °F (high). Annual precipitation averages 12.4 Inches. Carefree is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 41.5 °F | 64.3 °F | 1.65 in. |
| February | 43.0 °F | 66.6 °F | 1.74 in. |
| March | 46.9 °F | 72.6 °F | 1.55 in. |
| April | 52.4 °F | 80.0 °F | 0.49 in. |
| May | 61.5 °F | 89.3 °F | 0.26 in. |
| June | 70.6 °F | 99.0 °F | 0.05 in. |
| July | 76.4 °F | 101.9 °F | 1.25 in. |
| August | 76.0 °F | 100.4 °F | 1.4 in. |
| September | 71.3 °F | 96.0 °F | 0.79 in. |
| October | 61.1 °F | 85.2 °F | 1.02 in. |
| November | 49.5 °F | 73.0 °F | 0.75 in. |
| December | 42.3 °F | 63.3 °F | 1.45 in. |
| Annual | 57.7 °F | 82.6 °F | 12.4 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |