Sena, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.2 °C (low) to 20.6 °C (high). Annual precipitation averages 426.2 Millimeters. Sena is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.8 °C | 9.2 °C | 14.48 mm |
| February | -4.4 °C | 11.7 °C | 12.95 mm |
| March | -1.9 °C | 15.9 °C | 21.08 mm |
| April | 1.5 °C | 20 °C | 24.38 mm |
| May | 6.3 °C | 25 °C | 32.51 mm |
| June | 11.2 °C | 30.7 °C | 43.69 mm |
| July | 14.1 °C | 31.7 °C | 76.96 mm |
| August | 13.2 °C | 30.4 °C | 74.68 mm |
| September | 9.3 °C | 27.4 °C | 52.07 mm |
| October | 3.5 °C | 21.8 °C | 33.78 mm |
| November | -2.3 °C | 14.8 °C | 18.03 mm |
| December | -5.8 °C | 9.1 °C | 21.59 mm |
| Annual | 3.2 °C | 20.6 °C | 426.2 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |