Seminole, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 47.4 °F (low) to 76.2 °F (high). Annual precipitation averages 15.8 Inches. Seminole is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 28.2 °F | 56.3 °F | 0.7 in. |
| February | 31.2 °F | 61.1 °F | 0.68 in. |
| March | 37.9 °F | 69.2 °F | 1.03 in. |
| April | 45.3 °F | 77.4 °F | 0.92 in. |
| May | 55.7 °F | 85.5 °F | 1.97 in. |
| June | 64.4 °F | 93.2 °F | 1.91 in. |
| July | 67.3 °F | 94.1 °F | 1.78 in. |
| August | 66.2 °F | 92.9 °F | 1.46 in. |
| September | 59.3 °F | 85.6 °F | 2.58 in. |
| October | 48.2 °F | 77.2 °F | 1.2 in. |
| November | 36.2 °F | 65.1 °F | 0.96 in. |
| December | 29.2 °F | 57.2 °F | 0.65 in. |
| Annual | 47.4 °F | 76.2 °F | 15.84 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 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 | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |