Boutte, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 60.6 °F (low) to 78.5 °F (high). Annual precipitation averages 65 Inches. Boutte is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 44.3 °F | 62.9 °F | 5.44 in. |
| February | 47.7 °F | 66.6 °F | 4.5 in. |
| March | 53.7 °F | 72.5 °F | 4.43 in. |
| April | 59.9 °F | 78.2 °F | 4.96 in. |
| May | 67.5 °F | 84.7 °F | 5.64 in. |
| June | 73.3 °F | 89.2 °F | 7.19 in. |
| July | 74.9 °F | 91.1 °F | 7.32 in. |
| August | 74.6 °F | 91.3 °F | 6.83 in. |
| September | 71.5 °F | 87.9 °F | 5.66 in. |
| October | 61.9 °F | 80.8 °F | 3.92 in. |
| November | 51.8 °F | 71.4 °F | 4.05 in. |
| December | 46.6 °F | 65.2 °F | 5.07 in. |
| Annual | 60.6 °F | 78.5 °F | 65.01 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |