Coupland, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.4 °F (low) to 79.2 °F (high). Annual precipitation averages 36.2 Inches. Coupland is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.0 °F | 61.0 °F | 2.85 in. |
| February | 41.8 °F | 64.6 °F | 2.17 in. |
| March | 48.4 °F | 71.6 °F | 3.0 in. |
| April | 55.2 °F | 78.7 °F | 2.59 in. |
| May | 64.3 °F | 85.4 °F | 4.61 in. |
| June | 71.0 °F | 91.9 °F | 3.15 in. |
| July | 73.2 °F | 95.2 °F | 2.16 in. |
| August | 72.8 °F | 96.3 °F | 2.58 in. |
| September | 67.5 °F | 90.5 °F | 3.06 in. |
| October | 57.3 °F | 81.5 °F | 3.99 in. |
| November | 47.1 °F | 70.6 °F | 3.03 in. |
| December | 39.9 °F | 62.5 °F | 2.99 in. |
| Annual | 56.4 °F | 79.2 °F | 36.18 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |