Gilbertown, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.4 °C (low) to 25.1 °C (high). Annual precipitation averages 1451.6 Millimeters. Gilbertown 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.7 °C | 14.9 °C | 149.86 mm |
| February | 3.8 °C | 17.6 °C | 128.52 mm |
| March | 6.9 °C | 21.8 °C | 151.38 mm |
| April | 10.3 °C | 25.6 °C | 110.49 mm |
| May | 15 °C | 29.3 °C | 103.38 mm |
| June | 19.5 °C | 32.1 °C | 128.78 mm |
| July | 21.2 °C | 33.4 °C | 129.29 mm |
| August | 21.1 °C | 33.3 °C | 127 mm |
| September | 18.1 °C | 30.9 °C | 100.08 mm |
| October | 10.9 °C | 25.8 °C | 85.6 mm |
| November | 5.3 °C | 20.3 °C | 101.6 mm |
| December | 2.9 °C | 16.2 °C | 135.64 mm |
| Annual | 11.4 °C | 25.1 °C | 1451.62 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 |