Waggaman, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 61.6 °F (low) to 78.6 °F (high). Annual precipitation averages 65.6 Inches. Waggaman is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 44.9 °F | 62.4 °F | 5.51 in. |
| February | 48.3 °F | 66.1 °F | 4.27 in. |
| March | 54.3 °F | 72.3 °F | 4.54 in. |
| April | 61.0 °F | 78.6 °F | 4.9 in. |
| May | 68.5 °F | 85.5 °F | 5.57 in. |
| June | 74.2 °F | 90.2 °F | 7.35 in. |
| July | 75.9 °F | 91.7 °F | 7.61 in. |
| August | 75.9 °F | 91.5 °F | 7.25 in. |
| September | 72.6 °F | 88.0 °F | 5.6 in. |
| October | 63.5 °F | 80.7 °F | 3.83 in. |
| November | 53.2 °F | 71.1 °F | 4.07 in. |
| December | 47.3 °F | 64.7 °F | 5.13 in. |
| Annual | 61.6 °F | 78.6 °F | 65.63 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 |