Fort Hancock, Texas has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 9.1 °C (low) to 26.7 °C (high). Annual precipitation averages 201.4 Millimeters. Fort Hancock is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.8 °C | 15.9 °C | 9.14 mm |
| February | 0.7 °C | 18.9 °C | 9.65 mm |
| March | 4.4 °C | 23.2 °C | 6.35 mm |
| April | 8.3 °C | 27.8 °C | 4.83 mm |
| May | 13.1 °C | 32.4 °C | 11.43 mm |
| June | 18.4 °C | 36.5 °C | 16.76 mm |
| July | 20.5 °C | 35.7 °C | 37.08 mm |
| August | 19.7 °C | 34.6 °C | 34.54 mm |
| September | 16.2 °C | 31.8 °C | 26.16 mm |
| October | 9.4 °C | 27.5 °C | 21.59 mm |
| November | 2.4 °C | 20.9 °C | 8.89 mm |
| December | -1.7 °C | 15.4 °C | 14.99 mm |
| Annual | 9.1 °C | 26.7 °C | 201.41 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BWk - Cold Desert Climate |