Arabi, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 62.1 °F (low) to 78.5 °F (high). Annual precipitation averages 65.5 Inches. Arabi is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 45.0 °F | 62.1 °F | 5.5 in. |
| February | 48.4 °F | 66.0 °F | 4.27 in. |
| March | 54.7 °F | 72.2 °F | 4.55 in. |
| April | 61.3 °F | 78.6 °F | 5.01 in. |
| May | 68.9 °F | 85.7 °F | 5.4 in. |
| June | 74.6 °F | 90.3 °F | 6.94 in. |
| July | 76.4 °F | 91.7 °F | 7.48 in. |
| August | 76.4 °F | 91.5 °F | 7.9 in. |
| September | 73.3 °F | 88.1 °F | 5.52 in. |
| October | 64.1 °F | 80.5 °F | 3.86 in. |
| November | 53.9 °F | 71.0 °F | 4.02 in. |
| December | 47.7 °F | 64.5 °F | 5.04 in. |
| Annual | 62.1 °F | 78.5 °F | 65.49 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |