Sterling City, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 50.1 °F (low) to 77.9 °F (high). Annual precipitation averages 19.1 Inches. Sterling City is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.9 °F | 58.3 °F | 0.9 in. |
| February | 33.3 °F | 62.9 °F | 0.99 in. |
| March | 41.1 °F | 70.9 °F | 1.26 in. |
| April | 48.8 °F | 79.5 °F | 1.21 in. |
| May | 59.5 °F | 87.0 °F | 2.38 in. |
| June | 67.5 °F | 92.7 °F | 2.08 in. |
| July | 69.6 °F | 95.0 °F | 1.49 in. |
| August | 68.8 °F | 94.9 °F | 2.19 in. |
| September | 61.6 °F | 87.8 °F | 2.41 in. |
| October | 50.9 °F | 79.3 °F | 2.15 in. |
| November | 39.0 °F | 67.5 °F | 1.24 in. |
| December | 31.1 °F | 59.5 °F | 0.82 in. |
| Annual | 50.1 °F | 77.9 °F | 19.12 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |