Cooper, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.4 °F (low) to 75.2 °F (high). Annual precipitation averages 46 Inches. Cooper is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.5 °F | 54.6 °F | 3.14 in. |
| February | 37.0 °F | 58.7 °F | 3.6 in. |
| March | 44.3 °F | 66.4 °F | 4.33 in. |
| April | 51.7 °F | 74.4 °F | 4.41 in. |
| May | 61.4 °F | 81.9 °F | 4.96 in. |
| June | 69.6 °F | 89.5 °F | 3.73 in. |
| July | 73.1 °F | 93.9 °F | 2.94 in. |
| August | 72.0 °F | 94.7 °F | 2.48 in. |
| September | 65.0 °F | 88.1 °F | 3.28 in. |
| October | 53.7 °F | 77.6 °F | 5.09 in. |
| November | 43.6 °F | 65.7 °F | 3.99 in. |
| December | 35.8 °F | 56.6 °F | 4.06 in. |
| Annual | 53.4 °F | 75.2 °F | 46.01 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |