Gilbert, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.6 °F (low) to 76.8 °F (high). Annual precipitation averages 57.4 Inches. Gilbert is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.6 °F | 57.1 °F | 5.53 in. |
| February | 39.2 °F | 61.3 °F | 5.22 in. |
| March | 46.6 °F | 69.1 °F | 5.32 in. |
| April | 54.2 °F | 76.8 °F | 5.97 in. |
| May | 62.9 °F | 84.6 °F | 4.69 in. |
| June | 69.9 °F | 90.4 °F | 4.49 in. |
| July | 72.5 °F | 93.1 °F | 4.08 in. |
| August | 71.3 °F | 93.5 °F | 3.58 in. |
| September | 65.4 °F | 88.8 °F | 3.55 in. |
| October | 53.7 °F | 79.8 °F | 4.37 in. |
| November | 44.2 °F | 68.0 °F | 4.98 in. |
| December | 38.5 °F | 59.5 °F | 5.57 in. |
| Annual | 54.6 °F | 76.8 °F | 57.35 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |