Smyer, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 45.7 °F (low) to 74.4 °F (high). Annual precipitation averages 18.7 Inches. Smyer 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.3 °F | 54.5 °F | 0.68 in. |
| February | 28.4 °F | 59.1 °F | 0.59 in. |
| March | 35.7 °F | 67.2 °F | 1.18 in. |
| April | 43.5 °F | 75.2 °F | 1.14 in. |
| May | 54.2 °F | 83.3 °F | 2.52 in. |
| June | 63.6 °F | 90.9 °F | 2.61 in. |
| July | 66.7 °F | 92.6 °F | 2.03 in. |
| August | 65.2 °F | 91.1 °F | 2.1 in. |
| September | 57.9 °F | 84.0 °F | 2.63 in. |
| October | 46.3 °F | 75.3 °F | 1.62 in. |
| November | 34.3 °F | 63.6 °F | 0.86 in. |
| December | 26.9 °F | 55.4 °F | 0.75 in. |
| Annual | 45.7 °F | 74.4 °F | 18.71 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 |