Boyce, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 56.2 °F (low) to 77.2 °F (high). Annual precipitation averages 60.7 Inches. Boyce is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.5 °F | 59.0 °F | 5.88 in. |
| February | 41.8 °F | 63.1 °F | 5.2 in. |
| March | 48.5 °F | 70.5 °F | 5.46 in. |
| April | 55.5 °F | 77.1 °F | 5.6 in. |
| May | 64.0 °F | 84.3 °F | 4.59 in. |
| June | 70.7 °F | 89.9 °F | 4.94 in. |
| July | 73.1 °F | 92.0 °F | 4.76 in. |
| August | 72.5 °F | 92.8 °F | 3.94 in. |
| September | 67.2 °F | 88.2 °F | 4.17 in. |
| October | 56.0 °F | 79.5 °F | 4.59 in. |
| November | 45.8 °F | 68.7 °F | 5.66 in. |
| December | 40.3 °F | 61.0 °F | 5.9 in. |
| Annual | 56.2 °F | 77.2 °F | 60.69 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |