Natural Bridge, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.6 °C (low) to 22.1 °C (high). Annual precipitation averages 1592.8 Millimeters. Natural Bridge 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.2 °C | 10.6 °C | 147.57 mm |
| February | 0.7 °C | 13 °C | 150.11 mm |
| March | 4.5 °C | 17.8 °C | 143.51 mm |
| April | 8.9 °C | 22.5 °C | 150.62 mm |
| May | 14.1 °C | 26.4 °C | 136.91 mm |
| June | 18.4 °C | 30.1 °C | 130.56 mm |
| July | 20.2 °C | 31.7 °C | 129.03 mm |
| August | 19.8 °C | 31.7 °C | 116.33 mm |
| September | 16.3 °C | 29 °C | 108.46 mm |
| October | 9.6 °C | 23.3 °C | 101.35 mm |
| November | 3.6 °C | 16.9 °C | 118.11 mm |
| December | 0.7 °C | 11.9 °C | 160.27 mm |
| Annual | 9.6 °C | 22.1 °C | 1592.83 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |