Greenville, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54 °F (low) to 75.7 °F (high). Annual precipitation averages 44 Inches. Greenville 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 | 34.1 °F | 55.3 °F | 2.88 in. |
| February | 37.7 °F | 59.6 °F | 3.28 in. |
| March | 44.9 °F | 67.2 °F | 4.01 in. |
| April | 52.4 °F | 74.6 °F | 3.92 in. |
| May | 62.2 °F | 82.0 °F | 5.01 in. |
| June | 70.3 °F | 90.0 °F | 3.8 in. |
| July | 73.5 °F | 94.4 °F | 2.58 in. |
| August | 72.7 °F | 95.1 °F | 2.6 in. |
| September | 65.5 °F | 88.5 °F | 3.22 in. |
| October | 54.3 °F | 78.1 °F | 5.03 in. |
| November | 44.1 °F | 66.2 °F | 3.75 in. |
| December | 36.1 °F | 57.3 °F | 3.9 in. |
| Annual | 54 °F | 75.7 °F | 43.98 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |