Grove Hill, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.2 °C (low) to 24.2 °C (high). Annual precipitation averages 1512.3 Millimeters. Grove Hill 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 | 2.3 °C | 14.3 °C | 145.29 mm |
| February | 4.2 °C | 16.6 °C | 130.81 mm |
| March | 7.5 °C | 20.8 °C | 149.35 mm |
| April | 11.2 °C | 24.3 °C | 108.97 mm |
| May | 16.2 °C | 28.3 °C | 105.92 mm |
| June | 20.7 °C | 31.6 °C | 147.07 mm |
| July | 21.8 °C | 32.8 °C | 148.84 mm |
| August | 21.1 °C | 31.9 °C | 119.13 mm |
| September | 18.3 °C | 29.7 °C | 108.2 mm |
| October | 13 °C | 25.3 °C | 86.11 mm |
| November | 6.9 °C | 19.5 °C | 115.57 mm |
| December | 3.3 °C | 15.4 °C | 147.07 mm |
| Annual | 12.2 °C | 24.2 °C | 1512.33 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |