Anderson, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.4 °C (low) to 21.6 °C (high). Annual precipitation averages 1521.7 Millimeters. Anderson is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.2 °C | 9.7 °C | 143.76 mm |
| February | 0.3 °C | 12.2 °C | 141.73 mm |
| March | 4.2 °C | 17.1 °C | 143.51 mm |
| April | 8.7 °C | 22.1 °C | 131.06 mm |
| May | 13.9 °C | 26.1 °C | 134.11 mm |
| June | 18.3 °C | 29.9 °C | 123.95 mm |
| July | 20.3 °C | 31.6 °C | 123.44 mm |
| August | 19.4 °C | 31.4 °C | 103.63 mm |
| September | 15.9 °C | 28.7 °C | 110.74 mm |
| October | 9.2 °C | 23 °C | 97.54 mm |
| November | 3.3 °C | 16.4 °C | 111.51 mm |
| December | 0.3 °C | 11.3 °C | 156.72 mm |
| Annual | 9.4 °C | 21.6 °C | 1521.7 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |