New Iberia, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.9 °C (low) to 25.6 °C (high). Annual precipitation averages 1621.8 Millimeters. New Iberia is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.8 °C | 16.6 °C | 141.22 mm |
| February | 7.7 °C | 18.6 °C | 109.73 mm |
| March | 11.1 °C | 22.2 °C | 95.5 mm |
| April | 14.5 °C | 25.5 °C | 131.06 mm |
| May | 18.9 °C | 29.1 °C | 129.29 mm |
| June | 22.3 °C | 31.8 °C | 177.29 mm |
| July | 23.3 °C | 32.6 °C | 176.02 mm |
| August | 22.9 °C | 32.9 °C | 169.93 mm |
| September | 20.6 °C | 31.1 °C | 142.49 mm |
| October | 14.9 °C | 27.1 °C | 114.3 mm |
| November | 9.6 °C | 21.8 °C | 116.33 mm |
| December | 6.7 °C | 17.9 °C | 118.62 mm |
| Annual | 14.9 °C | 25.6 °C | 1621.78 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| 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 |