Altoona, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.1 °C (low) to 21.6 °C (high). Annual precipitation averages 1470.9 Millimeters. Altoona is located in USDA Plant Hardiness Zone 8a. 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 | -0.3 °C | 10.1 °C | 137.92 mm |
| February | 1.3 °C | 12.5 °C | 133.6 mm |
| March | 5.1 °C | 17.2 °C | 144.27 mm |
| April | 9.2 °C | 21.9 °C | 138.94 mm |
| May | 14.3 °C | 26 °C | 119.89 mm |
| June | 18.7 °C | 29.8 °C | 132.84 mm |
| July | 20.6 °C | 31.3 °C | 115.57 mm |
| August | 20 °C | 31 °C | 106.93 mm |
| September | 16.6 °C | 28.4 °C | 104.39 mm |
| October | 10.2 °C | 22.8 °C | 83.31 mm |
| November | 4.3 °C | 16.3 °C | 110.49 mm |
| December | 1.3 °C | 11.7 °C | 142.75 mm |
| Annual | 10.1 °C | 21.6 °C | 1470.9 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 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 |