Second Mesa, Arizona has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 3.6 °C (low) to 20.7 °C (high). Annual precipitation averages 218.4 Millimeters. 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 | -6.2 °C | 8.3 °C | 22.61 mm |
| February | -4.2 °C | 10.9 °C | 15.75 mm |
| March | -1.4 °C | 15.5 °C | 17.78 mm |
| April | 1.8 °C | 19.4 °C | 11.94 mm |
| May | 6.3 °C | 24.9 °C | 9.65 mm |
| June | 11.1 °C | 31.3 °C | 2.54 mm |
| July | 15.5 °C | 33.1 °C | 26.16 mm |
| August | 15.1 °C | 31.9 °C | 30.48 mm |
| September | 10.4 °C | 28.2 °C | 23.11 mm |
| October | 4.1 °C | 21.8 °C | 20.57 mm |
| November | -2.4 °C | 14.5 °C | 15.24 mm |
| December | -6.8 °C | 8.3 °C | 22.61 mm |
| Annual | 3.6 °C | 20.7 °C | 218.44 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |