Pierre Part, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.9 °C (low) to 25.5 °C (high). Annual precipitation averages 1625.9 Millimeters. 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 | 5.9 °C | 16.6 °C | 146.56 mm |
| February | 7.8 °C | 18.7 °C | 108.71 mm |
| March | 11.1 °C | 22.2 °C | 105.16 mm |
| April | 14.4 °C | 25.5 °C | 129.29 mm |
| May | 18.8 °C | 29.1 °C | 145.29 mm |
| June | 22.2 °C | 31.5 °C | 184.66 mm |
| July | 23.3 °C | 32.4 °C | 165.86 mm |
| August | 23.1 °C | 32.6 °C | 172.97 mm |
| September | 20.9 °C | 30.9 °C | 133.6 mm |
| October | 15.2 °C | 26.8 °C | 112.01 mm |
| November | 9.7 °C | 21.6 °C | 103.63 mm |
| December | 6.9 °C | 17.9 °C | 118.11 mm |
| Annual | 14.9 °C | 25.5 °C | 1625.85 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |