Blanchard, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.5 °F (low) to 76.2 °F (high). Annual precipitation averages 52.8 Inches. Blanchard is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.6 °F | 56.7 °F | 4.61 in. |
| February | 39.0 °F | 60.9 °F | 4.49 in. |
| March | 45.9 °F | 68.6 °F | 5.1 in. |
| April | 53.3 °F | 76.2 °F | 5.06 in. |
| May | 62.7 °F | 83.2 °F | 4.41 in. |
| June | 70.2 °F | 90.0 °F | 4.61 in. |
| July | 73.2 °F | 93.3 °F | 3.49 in. |
| August | 72.4 °F | 93.9 °F | 3.07 in. |
| September | 66.0 °F | 88.5 °F | 3.77 in. |
| October | 54.2 °F | 78.0 °F | 4.69 in. |
| November | 44.1 °F | 66.7 °F | 4.3 in. |
| December | 37.5 °F | 58.4 °F | 5.18 in. |
| Annual | 54.5 °F | 76.2 °F | 52.78 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |