Topawa, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 12.2 °C (low) to 29.3 °C (high). Annual precipitation averages 341.1 Millimeters. Topawa is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.1 °C | 19.4 °C | 24.64 mm |
| February | 4.3 °C | 20.9 °C | 21.84 mm |
| March | 7.2 °C | 24.3 °C | 21.34 mm |
| April | 9.6 °C | 28.2 °C | 6.6 mm |
| May | 14.2 °C | 33.2 °C | 7.11 mm |
| June | 19.6 °C | 38.5 °C | 7.11 mm |
| July | 23.2 °C | 38.7 °C | 72.9 mm |
| August | 22.7 °C | 37.5 °C | 74.93 mm |
| September | 19.6 °C | 35.8 °C | 36.32 mm |
| October | 13.2 °C | 31.1 °C | 17.78 mm |
| November | 6.9 °C | 24.5 °C | 14.48 mm |
| December | 2.9 °C | 19.1 °C | 36.07 mm |
| Annual | 12.2 °C | 29.3 °C | 341.12 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BWh - Hot Desert Climate |