Fabens, Texas has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 49 °F (low) to 79.7 °F (high). Annual precipitation averages 7.1 Inches. Fabens is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.4 °F | 60.2 °F | 0.39 in. |
| February | 33.7 °F | 65.7 °F | 0.28 in. |
| March | 40.6 °F | 73.5 °F | 0.21 in. |
| April | 47.6 °F | 81.2 °F | 0.15 in. |
| May | 56.3 °F | 89.2 °F | 0.44 in. |
| June | 65.7 °F | 97.0 °F | 0.65 in. |
| July | 69.2 °F | 96.1 °F | 1.12 in. |
| August | 67.8 °F | 94.3 °F | 1.29 in. |
| September | 61.7 °F | 89.1 °F | 0.91 in. |
| October | 49.4 °F | 81.0 °F | 0.74 in. |
| November | 37.1 °F | 69.3 °F | 0.38 in. |
| December | 29.7 °F | 59.7 °F | 0.58 in. |
| Annual | 49 °F | 79.7 °F | 7.14 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BWk - Cold Desert Climate |