Quitman, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.7 °C (low) to 24.8 °C (high). Annual precipitation averages 1454.4 Millimeters. Quitman is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.6 °C | 13.9 °C | 143.51 mm |
| February | 3.2 °C | 16.3 °C | 130.3 mm |
| March | 7 °C | 20.6 °C | 133.86 mm |
| April | 11.1 °C | 24.7 °C | 142.24 mm |
| May | 16.2 °C | 28.9 °C | 122.68 mm |
| June | 20.4 °C | 32.7 °C | 118.36 mm |
| July | 22 °C | 33.7 °C | 99.57 mm |
| August | 21.4 °C | 34.2 °C | 90.93 mm |
| September | 17.9 °C | 31.5 °C | 94.74 mm |
| October | 11.4 °C | 26.1 °C | 114.3 mm |
| November | 6 °C | 19.6 °C | 121.67 mm |
| December | 2.7 °C | 15.1 °C | 142.24 mm |
| Annual | 11.7 °C | 24.8 °C | 1454.4 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 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 |