Pierre Part, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 58.9 °F (low) to 77.9 °F (high). Annual precipitation averages 64 Inches. Pierre Part is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 1 - Jan. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.6 °F | 61.9 °F | 5.77 in. |
| February | 46.1 °F | 65.7 °F | 4.28 in. |
| March | 51.9 °F | 71.9 °F | 4.14 in. |
| April | 58.0 °F | 77.9 °F | 5.09 in. |
| May | 65.9 °F | 84.3 °F | 5.72 in. |
| June | 72.0 °F | 88.7 °F | 7.27 in. |
| July | 73.9 °F | 90.3 °F | 6.53 in. |
| August | 73.5 °F | 90.7 °F | 6.81 in. |
| September | 69.6 °F | 87.6 °F | 5.26 in. |
| October | 59.4 °F | 80.3 °F | 4.41 in. |
| November | 49.4 °F | 70.8 °F | 4.08 in. |
| December | 44.5 °F | 64.2 °F | 4.65 in. |
| Annual | 58.9 °F | 77.9 °F | 64.01 in. |
| Average First Frost Date | Jan. 1 - Jan. 10 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |