Farmersville, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.7 °F (low) to 75.5 °F (high). Annual precipitation averages 42.3 Inches. Farmersville 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 | 34.6 °F | 55.0 °F | 2.58 in. |
| February | 38.2 °F | 59.6 °F | 3.23 in. |
| March | 45.8 °F | 67.1 °F | 3.85 in. |
| April | 53.5 °F | 74.8 °F | 3.74 in. |
| May | 62.8 °F | 82.1 °F | 5.14 in. |
| June | 70.7 °F | 89.9 °F | 4.01 in. |
| July | 74.1 °F | 94.4 °F | 2.02 in. |
| August | 73.5 °F | 94.8 °F | 2.44 in. |
| September | 66.3 °F | 87.9 °F | 3.13 in. |
| October | 55.3 °F | 77.8 °F | 4.89 in. |
| November | 44.9 °F | 65.8 °F | 3.52 in. |
| December | 36.8 °F | 57.0 °F | 3.72 in. |
| Annual | 54.7 °F | 75.5 °F | 42.27 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |