Roanoke, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.2 °F (low) to 76.7 °F (high). Annual precipitation averages 37.9 Inches. Roanoke 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 | 34.5 °F | 56.4 °F | 2.43 in. |
| February | 38.2 °F | 60.3 °F | 2.65 in. |
| March | 46.0 °F | 67.9 °F | 3.34 in. |
| April | 53.7 °F | 75.9 °F | 3.38 in. |
| May | 63.4 °F | 83.3 °F | 4.48 in. |
| June | 71.6 °F | 91.6 °F | 3.84 in. |
| July | 75.1 °F | 95.9 °F | 2.26 in. |
| August | 74.7 °F | 96.5 °F | 2.39 in. |
| September | 67.2 °F | 89.2 °F | 3.05 in. |
| October | 55.7 °F | 78.7 °F | 4.23 in. |
| November | 45.3 °F | 66.9 °F | 2.84 in. |
| December | 36.5 °F | 58.0 °F | 3.01 in. |
| Annual | 55.2 °F | 76.7 °F | 37.9 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 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 |