Anniston, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 22.9 °C (high). Annual precipitation averages 1428.5 Millimeters. Anniston is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.1 °C | 12.1 °C | 135.89 mm |
| February | 1.6 °C | 14.2 °C | 140.72 mm |
| March | 5 °C | 18.8 °C | 140.72 mm |
| April | 9.1 °C | 23.2 °C | 122.94 mm |
| May | 14.3 °C | 27 °C | 106.17 mm |
| June | 18.7 °C | 30.4 °C | 123.95 mm |
| July | 20.7 °C | 32 °C | 120.4 mm |
| August | 20.2 °C | 31.7 °C | 106.93 mm |
| September | 16.8 °C | 29.3 °C | 96.01 mm |
| October | 10.1 °C | 23.9 °C | 87.63 mm |
| November | 4.1 °C | 18 °C | 114.81 mm |
| December | 1.4 °C | 13.6 °C | 132.33 mm |
| Annual | 10.2 °C | 22.9 °C | 1428.5 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |