Bon Secour, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.8 °C (low) to 24.6 °C (high). Annual precipitation averages 1683 Millimeters. Bon Secour is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.1 °C | 15.9 °C | 132.08 mm |
| February | 7 °C | 17.8 °C | 122.94 mm |
| March | 10.2 °C | 21.1 °C | 133.6 mm |
| April | 13.9 °C | 23.9 °C | 141.99 mm |
| May | 18.4 °C | 27.7 °C | 98.04 mm |
| June | 22.8 °C | 30.6 °C | 159.77 mm |
| July | 23.8 °C | 31.6 °C | 184.91 mm |
| August | 23.6 °C | 31.5 °C | 191.77 mm |
| September | 21 °C | 29.9 °C | 184.15 mm |
| October | 15.6 °C | 26.1 °C | 100.08 mm |
| November | 9.6 °C | 21.1 °C | 109.47 mm |
| December | 6.5 °C | 17.5 °C | 124.21 mm |
| Annual | 14.8 °C | 24.6 °C | 1683.01 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |