Boyle, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12 °C (low) to 23 °C (high). Annual precipitation averages 1416.3 Millimeters. Boyle is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °C | 10.8 °C | 130.56 mm |
| February | 2.8 °C | 13.3 °C | 128.78 mm |
| March | 6.9 °C | 18.2 °C | 137.16 mm |
| April | 11.8 °C | 23.3 °C | 149.1 mm |
| May | 17.2 °C | 27.9 °C | 137.41 mm |
| June | 21.2 °C | 31.6 °C | 104.39 mm |
| July | 22.6 °C | 32.8 °C | 94.23 mm |
| August | 21.7 °C | 32.9 °C | 80.01 mm |
| September | 18 °C | 30.6 °C | 90.68 mm |
| October | 11.7 °C | 24.8 °C | 100.08 mm |
| November | 6 °C | 17.7 °C | 116.84 mm |
| December | 2.7 °C | 12.3 °C | 147.07 mm |
| Annual | 12 °C | 23 °C | 1416.31 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |