Cactus, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.7 °C (low) to 21.9 °C (high). Annual precipitation averages 436.1 Millimeters. Cactus is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.6 °C | 10.1 °C | 10.92 mm |
| February | -4.3 °C | 12.1 °C | 8.38 mm |
| March | -0.3 °C | 17 °C | 24.89 mm |
| April | 4.1 °C | 21.3 °C | 32 mm |
| May | 10 °C | 26.6 °C | 51.05 mm |
| June | 15.7 °C | 31.8 °C | 64.77 mm |
| July | 18.2 °C | 33.7 °C | 70.61 mm |
| August | 17.3 °C | 32.6 °C | 68.58 mm |
| September | 13 °C | 28.8 °C | 34.04 mm |
| October | 5.9 °C | 22.6 °C | 42.93 mm |
| November | -0.7 °C | 15.7 °C | 12.45 mm |
| December | -5.1 °C | 10.1 °C | 15.49 mm |
| Annual | 5.7 °C | 21.9 °C | 436.11 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |