Mesa, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 59.7 °F (low) to 86.6 °F (high). Annual precipitation averages 9.1 Inches. Mesa is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.4 °F | 67.4 °F | 1.17 in. |
| February | 45.3 °F | 70.8 °F | 1.07 in. |
| March | 49.9 °F | 77.4 °F | 1.11 in. |
| April | 55.8 °F | 84.5 °F | 0.31 in. |
| May | 64.4 °F | 93.7 °F | 0.13 in. |
| June | 72.8 °F | 103.1 °F | 0.04 in. |
| July | 80.0 °F | 105.5 °F | 0.99 in. |
| August | 79.5 °F | 104.3 °F | 1.26 in. |
| September | 73.3 °F | 99.8 °F | 0.86 in. |
| October | 61.0 °F | 89.3 °F | 0.56 in. |
| November | 50.1 °F | 76.5 °F | 0.56 in. |
| December | 42.1 °F | 66.3 °F | 1.08 in. |
| Annual | 59.7 °F | 86.6 °F | 9.14 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 | BWh - Hot Desert Climate |