Olton, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 43.3 °F (low) to 72.5 °F (high). Annual precipitation averages 18.3 Inches. Olton 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.2 °F | 52.6 °F | 0.54 in. |
| February | 26.0 °F | 57.0 °F | 0.56 in. |
| March | 33.2 °F | 64.9 °F | 1.11 in. |
| April | 40.7 °F | 73.1 °F | 1.08 in. |
| May | 51.5 °F | 81.0 °F | 2.13 in. |
| June | 61.2 °F | 89.0 °F | 2.97 in. |
| July | 64.6 °F | 91.0 °F | 2.01 in. |
| August | 63.2 °F | 89.8 °F | 2.61 in. |
| September | 55.9 °F | 83.0 °F | 2.08 in. |
| October | 43.8 °F | 73.5 °F | 1.72 in. |
| November | 32.0 °F | 61.9 °F | 0.78 in. |
| December | 24.8 °F | 53.0 °F | 0.72 in. |
| Annual | 43.3 °F | 72.5 °F | 18.31 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |