Gilbert, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.6 °C (low) to 24.9 °C (high). Annual precipitation averages 1456.7 Millimeters. 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 | 2.6 °C | 13.9 °C | 140.46 mm |
| February | 4 °C | 16.3 °C | 132.59 mm |
| March | 8.1 °C | 20.6 °C | 135.13 mm |
| April | 12.3 °C | 24.9 °C | 151.64 mm |
| May | 17.2 °C | 29.2 °C | 119.13 mm |
| June | 21.1 °C | 32.4 °C | 114.05 mm |
| July | 22.5 °C | 33.9 °C | 103.63 mm |
| August | 21.8 °C | 34.2 °C | 90.93 mm |
| September | 18.6 °C | 31.6 °C | 90.17 mm |
| October | 12.1 °C | 26.6 °C | 111 mm |
| November | 6.8 °C | 20 °C | 126.49 mm |
| December | 3.6 °C | 15.3 °C | 141.48 mm |
| Annual | 12.6 °C | 24.9 °C | 1456.7 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |