Rodessa, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.7 °C (low) to 24.4 °C (high). Annual precipitation averages 1300.5 Millimeters. Rodessa 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 | 1.1 °C | 13.3 °C | 107.7 mm |
| February | 2.9 °C | 15.6 °C | 114.55 mm |
| March | 6.8 °C | 20.1 °C | 124.71 mm |
| April | 10.9 °C | 24.4 °C | 118.62 mm |
| May | 16.3 °C | 28.3 °C | 115.82 mm |
| June | 20.7 °C | 32.2 °C | 110.24 mm |
| July | 22.4 °C | 34.2 °C | 83.82 mm |
| August | 21.8 °C | 34.4 °C | 80.01 mm |
| September | 18 °C | 31.2 °C | 96.52 mm |
| October | 11.3 °C | 25.3 °C | 122.68 mm |
| November | 5.8 °C | 18.9 °C | 101.85 mm |
| December | 2.1 °C | 14.3 °C | 123.95 mm |
| Annual | 11.7 °C | 24.4 °C | 1300.47 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |