Groesbeck, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 55.6 °F (low) to 77.9 °F (high). Annual precipitation averages 42 Inches. Groesbeck 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 | 36.8 °F | 58.7 °F | 3.29 in. |
| February | 40.6 °F | 62.9 °F | 3.21 in. |
| March | 47.2 °F | 69.6 °F | 3.96 in. |
| April | 54.4 °F | 77.2 °F | 3.38 in. |
| May | 63.5 °F | 83.9 °F | 4.4 in. |
| June | 70.6 °F | 91.2 °F | 3.64 in. |
| July | 73.2 °F | 95.1 °F | 2.23 in. |
| August | 72.8 °F | 96.0 °F | 2.6 in. |
| September | 66.6 °F | 90.1 °F | 3.4 in. |
| October | 56.2 °F | 80.2 °F | 4.41 in. |
| November | 46.4 °F | 68.8 °F | 3.56 in. |
| December | 38.7 °F | 60.5 °F | 3.95 in. |
| Annual | 55.6 °F | 77.9 °F | 42.03 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 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |