Fenton, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.8 °C (low) to 25.5 °C (high). Annual precipitation averages 1589 Millimeters. Fenton is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.3 °C | 16.1 °C | 162.56 mm |
| February | 7.3 °C | 18.3 °C | 115.32 mm |
| March | 10.7 °C | 21.9 °C | 101.09 mm |
| April | 14.5 °C | 25.4 °C | 123.44 mm |
| May | 19.1 °C | 29.1 °C | 137.92 mm |
| June | 22.4 °C | 32 °C | 164.08 mm |
| July | 23.4 °C | 32.9 °C | 137.41 mm |
| August | 23.2 °C | 33.3 °C | 133.86 mm |
| September | 20.6 °C | 31.3 °C | 136.14 mm |
| October | 14.8 °C | 27.1 °C | 121.92 mm |
| November | 9.4 °C | 21.4 °C | 123.19 mm |
| December | 6.4 °C | 17.3 °C | 132.08 mm |
| Annual | 14.8 °C | 25.5 °C | 1589.01 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°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 |