Lisbon, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.5 °C (low) to 24.5 °C (high). Annual precipitation averages 1464.6 Millimeters. Lisbon is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °C | 13.8 °C | 136.91 mm |
| February | 2.8 °C | 15.9 °C | 130.81 mm |
| March | 6.6 °C | 20.4 °C | 142.75 mm |
| April | 10.7 °C | 24.6 °C | 149.61 mm |
| May | 15.9 °C | 28.4 °C | 122.43 mm |
| June | 20.2 °C | 32.1 °C | 116.59 mm |
| July | 21.9 °C | 33.9 °C | 100.84 mm |
| August | 21.4 °C | 34.1 °C | 85.85 mm |
| September | 17.7 °C | 31.2 °C | 96.01 mm |
| October | 11.2 °C | 25.6 °C | 124.71 mm |
| November | 5.8 °C | 19.2 °C | 114.55 mm |
| December | 2.4 °C | 14.8 °C | 143.51 mm |
| Annual | 11.5 °C | 24.5 °C | 1464.57 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |