Second Mesa, Arizona has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 38.5 °F (low) to 69.2 °F (high). Annual precipitation averages 8.6 Inches. Second Mesa is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.9 °F | 47.0 °F | 0.89 in. |
| February | 24.4 °F | 51.7 °F | 0.62 in. |
| March | 29.4 °F | 59.9 °F | 0.7 in. |
| April | 35.3 °F | 67.0 °F | 0.47 in. |
| May | 43.4 °F | 76.8 °F | 0.38 in. |
| June | 52.0 °F | 88.3 °F | 0.1 in. |
| July | 59.9 °F | 91.6 °F | 1.03 in. |
| August | 59.2 °F | 89.4 °F | 1.2 in. |
| September | 50.8 °F | 82.7 °F | 0.91 in. |
| October | 39.3 °F | 71.2 °F | 0.81 in. |
| November | 27.7 °F | 58.1 °F | 0.6 in. |
| December | 19.7 °F | 47.0 °F | 0.89 in. |
| Annual | 38.5 °F | 69.2 °F | 8.6 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |