Sunray, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 6.3 °C (low) to 22.2 °C (high). Annual precipitation averages 439.9 Millimeters. Sunray 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.1 °C | 10.3 °C | 9.91 mm |
| February | -3.7 °C | 12.3 °C | 7.62 mm |
| March | 0.3 °C | 17.3 °C | 23.62 mm |
| April | 4.7 °C | 21.8 °C | 31.24 mm |
| May | 10.5 °C | 27 °C | 52.32 mm |
| June | 16.2 °C | 32.2 °C | 68.83 mm |
| July | 18.6 °C | 33.9 °C | 77.98 mm |
| August | 17.8 °C | 32.9 °C | 67.56 mm |
| September | 13.5 °C | 29.2 °C | 32.51 mm |
| October | 6.6 °C | 23.2 °C | 43.69 mm |
| November | 0 °C | 15.9 °C | 11.18 mm |
| December | -4.4 °C | 10.3 °C | 13.46 mm |
| Annual | 6.3 °C | 22.2 °C | 439.92 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 |