Joyce, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.1 °C (low) to 25.2 °C (high). Annual precipitation averages 1504.2 Millimeters. Joyce 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 | 2.3 °C | 14.8 °C | 146.3 mm |
| February | 4 °C | 17.1 °C | 126.49 mm |
| March | 7.6 °C | 21.6 °C | 137.16 mm |
| April | 11.7 °C | 25.5 °C | 150.37 mm |
| May | 16.6 °C | 29.1 °C | 123.7 mm |
| June | 20.5 °C | 32.5 °C | 122.94 mm |
| July | 21.9 °C | 33.8 °C | 114.55 mm |
| August | 21.4 °C | 34.1 °C | 95.76 mm |
| September | 18.1 °C | 31.6 °C | 88.9 mm |
| October | 11.8 °C | 26.7 °C | 115.57 mm |
| November | 6.3 °C | 20.3 °C | 128.27 mm |
| December | 3.2 °C | 15.8 °C | 154.18 mm |
| Annual | 12.1 °C | 25.2 °C | 1504.19 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |