Hayes, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15.2 °C (low) to 25.3 °C (high). Annual precipitation averages 1553.2 Millimeters. Hayes is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.7 °C | 15.9 °C | 147.32 mm |
| February | 7.7 °C | 18.1 °C | 103.89 mm |
| March | 11.2 °C | 21.7 °C | 89.15 mm |
| April | 15.1 °C | 25.1 °C | 123.44 mm |
| May | 19.6 °C | 28.7 °C | 125.48 mm |
| June | 22.8 °C | 31.7 °C | 167.89 mm |
| July | 23.8 °C | 32.7 °C | 150.11 mm |
| August | 23.4 °C | 33.1 °C | 151.13 mm |
| September | 21.1 °C | 31.2 °C | 140.72 mm |
| October | 15.5 °C | 27.1 °C | 113.79 mm |
| November | 10 °C | 21.3 °C | 122.17 mm |
| December | 6.8 °C | 17.2 °C | 118.11 mm |
| Annual | 15.2 °C | 25.3 °C | 1553.2 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |