Pima, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 48.2 °F (low) to 82.3 °F (high). Annual precipitation averages 10.4 Inches. Pima is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.4 °F | 62.5 °F | 0.96 in. |
| February | 33.7 °F | 67.2 °F | 0.97 in. |
| March | 38.8 °F | 74.3 °F | 0.49 in. |
| April | 44.3 °F | 82.6 °F | 0.36 in. |
| May | 52.9 °F | 91.5 °F | 0.32 in. |
| June | 62.5 °F | 99.9 °F | 0.23 in. |
| July | 70.1 °F | 100.1 °F | 1.51 in. |
| August | 68.6 °F | 97.9 °F | 2.02 in. |
| September | 61.6 °F | 93.5 °F | 1.23 in. |
| October | 48.5 °F | 85.1 °F | 0.77 in. |
| November | 37.1 °F | 72.1 °F | 0.57 in. |
| December | 30.2 °F | 61.4 °F | 0.98 in. |
| Annual | 48.2 °F | 82.3 °F | 10.41 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |