Bon Air, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.2 °C (low) to 24.1 °C (high). Annual precipitation averages 1429 Millimeters. Bon Air 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.3 °C | 13.2 °C | 134.37 mm |
| February | 1.9 °C | 15.8 °C | 142.24 mm |
| March | 5.3 °C | 20.2 °C | 135.89 mm |
| April | 9.2 °C | 24.6 °C | 124.97 mm |
| May | 14.2 °C | 28.3 °C | 113.54 mm |
| June | 18.6 °C | 31.6 °C | 123.7 mm |
| July | 20.5 °C | 33.2 °C | 114.55 mm |
| August | 20 °C | 32.8 °C | 107.95 mm |
| September | 16.7 °C | 30.5 °C | 97.28 mm |
| October | 9.9 °C | 25.3 °C | 83.82 mm |
| November | 4 °C | 19.1 °C | 117.6 mm |
| December | 1.6 °C | 14.6 °C | 133.1 mm |
| Annual | 10.2 °C | 24.1 °C | 1429.01 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 |