Lucas, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.8 °F (low) to 76.1 °F (high). Annual precipitation averages 41.2 Inches. Lucas is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.6 °F | 55.6 °F | 2.7 in. |
| February | 38.4 °F | 60.0 °F | 2.95 in. |
| March | 45.9 °F | 67.5 °F | 3.78 in. |
| April | 53.6 °F | 75.2 °F | 3.66 in. |
| May | 63.1 °F | 82.5 °F | 4.98 in. |
| June | 71.0 °F | 90.5 °F | 3.93 in. |
| July | 74.2 °F | 94.7 °F | 2.1 in. |
| August | 73.6 °F | 95.4 °F | 2.27 in. |
| September | 66.5 °F | 88.6 °F | 3.12 in. |
| October | 55.2 °F | 78.6 °F | 4.66 in. |
| November | 44.9 °F | 66.5 °F | 3.44 in. |
| December | 36.8 °F | 57.7 °F | 3.57 in. |
| Annual | 54.8 °F | 76.1 °F | 41.16 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 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 |