Orange Grove, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 61.5 °F (low) to 83 °F (high). Annual precipitation averages 28.3 Inches. Orange Grove is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 45.0 °F | 67.5 °F | 1.42 in. |
| February | 49.3 °F | 71.8 °F | 1.32 in. |
| March | 55.5 °F | 77.4 °F | 2.17 in. |
| April | 61.5 °F | 83.1 °F | 1.85 in. |
| May | 69.0 °F | 88.3 °F | 3.1 in. |
| June | 73.6 °F | 93.5 °F | 3.3 in. |
| July | 74.4 °F | 95.4 °F | 3.08 in. |
| August | 74.6 °F | 96.8 °F | 2.37 in. |
| September | 71.3 °F | 91.5 °F | 4.18 in. |
| October | 63.2 °F | 85.5 °F | 2.26 in. |
| November | 53.7 °F | 76.4 °F | 1.48 in. |
| December | 47.1 °F | 69.1 °F | 1.77 in. |
| Annual | 61.5 °F | 83 °F | 28.3 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |