Ralls, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 46.6 °F (low) to 74.2 °F (high). Annual precipitation averages 20.4 Inches. Ralls is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.3 °F | 54.3 °F | 0.72 in. |
| February | 29.2 °F | 58.6 °F | 0.8 in. |
| March | 36.7 °F | 66.8 °F | 1.27 in. |
| April | 44.5 °F | 75.0 °F | 1.63 in. |
| May | 55.0 °F | 82.8 °F | 2.77 in. |
| June | 64.1 °F | 90.0 °F | 2.97 in. |
| July | 67.5 °F | 92.6 °F | 2.2 in. |
| August | 66.2 °F | 91.9 °F | 2.11 in. |
| September | 58.9 °F | 84.6 °F | 2.61 in. |
| October | 47.5 °F | 75.2 °F | 1.57 in. |
| November | 35.7 °F | 63.6 °F | 0.99 in. |
| December | 27.8 °F | 54.8 °F | 0.78 in. |
| Annual | 46.6 °F | 74.2 °F | 20.42 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |