Garwood, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 59 °F (low) to 80.2 °F (high). Annual precipitation averages 44.4 Inches. Garwood is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.4 °F | 63.2 °F | 3.39 in. |
| February | 46.1 °F | 66.8 °F | 2.59 in. |
| March | 52.3 °F | 73.3 °F | 3.24 in. |
| April | 58.5 °F | 79.8 °F | 3.36 in. |
| May | 66.4 °F | 86.1 °F | 4.57 in. |
| June | 72.2 °F | 91.3 °F | 4.65 in. |
| July | 73.5 °F | 93.6 °F | 3.13 in. |
| August | 73.5 °F | 95.8 °F | 3.81 in. |
| September | 69.2 °F | 90.7 °F | 4.2 in. |
| October | 59.5 °F | 83.0 °F | 4.29 in. |
| November | 50.4 °F | 73.0 °F | 3.88 in. |
| December | 44.1 °F | 65.4 °F | 3.32 in. |
| Annual | 59 °F | 80.2 °F | 44.43 in. |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |