Walker, Louisiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.8 °C (low) to 25.8 °C (high). Annual precipitation averages 1683.5 Millimeters. Walker is located in USDA Plant Hardiness Zone 9a. 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 | 4.6 °C | 16.5 °C | 156.72 mm |
| February | 6.4 °C | 18.8 °C | 128.02 mm |
| March | 9.8 °C | 22.4 °C | 125.48 mm |
| April | 13.2 °C | 25.8 °C | 131.06 mm |
| May | 17.7 °C | 29.5 °C | 150.62 mm |
| June | 21.3 °C | 32.2 °C | 175.77 mm |
| July | 22.6 °C | 33 °C | 156.72 mm |
| August | 22.3 °C | 33.3 °C | 176.28 mm |
| September | 19.9 °C | 31.4 °C | 120.14 mm |
| October | 13.8 °C | 27.2 °C | 120.65 mm |
| November | 8.3 °C | 21.4 °C | 104.9 mm |
| December | 5.6 °C | 17.7 °C | 137.16 mm |
| Annual | 13.8 °C | 25.8 °C | 1683.52 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 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |