Natchez, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.9 °C (low) to 25.3 °C (high). Annual precipitation averages 1456.2 Millimeters. Natchez is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3 °C | 14.7 °C | 143.51 mm |
| February | 4.7 °C | 17.1 °C | 124.46 mm |
| March | 8.4 °C | 21.2 °C | 139.45 mm |
| April | 12.5 °C | 25.4 °C | 137.41 mm |
| May | 17.3 °C | 29.5 °C | 117.86 mm |
| June | 21.3 °C | 32.8 °C | 115.82 mm |
| July | 22.8 °C | 34.3 °C | 106.17 mm |
| August | 22.3 °C | 34.6 °C | 96.27 mm |
| September | 19.1 °C | 31.7 °C | 96.01 mm |
| October | 12.6 °C | 26.6 °C | 113.54 mm |
| November | 7.1 °C | 20.3 °C | 122.68 mm |
| December | 3.9 °C | 15.9 °C | 143 mm |
| Annual | 12.9 °C | 25.3 °C | 1456.18 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |