Coolidge, Arizona has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 55.8 °F (low) to 85.9 °F (high). Annual precipitation averages 8.6 Inches. Coolidge is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.7 °F | 66.7 °F | 1.1 in. |
| February | 41.3 °F | 70.3 °F | 1.0 in. |
| March | 45.5 °F | 77.0 °F | 1.05 in. |
| April | 51.3 °F | 84.3 °F | 0.29 in. |
| May | 59.6 °F | 93.7 °F | 0.2 in. |
| June | 68.9 °F | 103.0 °F | 0.06 in. |
| July | 77.2 °F | 104.3 °F | 0.95 in. |
| August | 76.5 °F | 102.8 °F | 1.31 in. |
| September | 70.1 °F | 98.7 °F | 0.66 in. |
| October | 57.4 °F | 88.7 °F | 0.55 in. |
| November | 45.4 °F | 76.2 °F | 0.52 in. |
| December | 38.0 °F | 65.6 °F | 0.93 in. |
| Annual | 55.8 °F | 85.9 °F | 8.62 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |