Carlyss, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 59 °F (low) to 78.1 °F (high). Annual precipitation averages 63.6 Inches. Carlyss 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. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.0 °F | 61.3 °F | 6.13 in. |
| February | 45.6 °F | 65.0 °F | 4.01 in. |
| March | 51.7 °F | 71.4 °F | 3.78 in. |
| April | 58.5 °F | 77.6 °F | 4.59 in. |
| May | 66.7 °F | 84.3 °F | 5.25 in. |
| June | 72.8 °F | 89.5 °F | 6.94 in. |
| July | 74.6 °F | 91.4 °F | 6.36 in. |
| August | 74.1 °F | 92.2 °F | 6.07 in. |
| September | 69.6 °F | 88.6 °F | 5.79 in. |
| October | 59.3 °F | 81.1 °F | 4.87 in. |
| November | 49.6 °F | 70.8 °F | 4.74 in. |
| December | 43.9 °F | 63.5 °F | 5.06 in. |
| Annual | 59 °F | 78.1 °F | 63.59 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |