Jeanerette, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15 °C (low) to 25.4 °C (high). Annual precipitation averages 1628.1 Millimeters. Jeanerette is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.9 °C | 16.6 °C | 136.14 mm |
| February | 7.9 °C | 18.6 °C | 105.16 mm |
| March | 11.2 °C | 22.1 °C | 96.52 mm |
| April | 14.6 °C | 25.3 °C | 122.94 mm |
| May | 19 °C | 28.9 °C | 127.76 mm |
| June | 22.3 °C | 31.5 °C | 179.83 mm |
| July | 23.4 °C | 32.3 °C | 183.64 mm |
| August | 23.1 °C | 32.7 °C | 182.88 mm |
| September | 20.8 °C | 30.9 °C | 149.35 mm |
| October | 15.1 °C | 26.8 °C | 112.27 mm |
| November | 9.7 °C | 21.6 °C | 111.51 mm |
| December | 6.9 °C | 17.9 °C | 120.14 mm |
| Annual | 15 °C | 25.4 °C | 1628.14 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°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 |