Pima, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 9 °C (low) to 28 °C (high). Annual precipitation averages 264.4 Millimeters. 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 | -0.9 °C | 16.9 °C | 24.38 mm |
| February | 0.9 °C | 19.6 °C | 24.64 mm |
| March | 3.8 °C | 23.5 °C | 12.45 mm |
| April | 6.8 °C | 28.1 °C | 9.14 mm |
| May | 11.6 °C | 33.1 °C | 8.13 mm |
| June | 16.9 °C | 37.7 °C | 5.84 mm |
| July | 21.2 °C | 37.8 °C | 38.35 mm |
| August | 20.3 °C | 36.6 °C | 51.31 mm |
| September | 16.4 °C | 34.2 °C | 31.24 mm |
| October | 9.2 °C | 29.5 °C | 19.56 mm |
| November | 2.8 °C | 22.3 °C | 14.48 mm |
| December | -1 °C | 16.3 °C | 24.89 mm |
| Annual | 9 °C | 28 °C | 264.41 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |