Galax, Virginia has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 5.3 °C (low) to 17.6 °C (high). Annual precipitation averages 1164.6 Millimeters. Galax is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.8 °C | 6.1 °C | 87.88 mm |
| February | -3.7 °C | 7.8 °C | 71.88 mm |
| March | -0.3 °C | 12.3 °C | 92.46 mm |
| April | 4.3 °C | 17.9 °C | 100.58 mm |
| May | 9.3 °C | 22.3 °C | 105.66 mm |
| June | 13.6 °C | 26.1 °C | 112.52 mm |
| July | 16.1 °C | 27.8 °C | 121.41 mm |
| August | 15.4 °C | 27.1 °C | 106.93 mm |
| September | 11.8 °C | 23.8 °C | 111 mm |
| October | 5.3 °C | 18.7 °C | 85.6 mm |
| November | -0.2 °C | 12.9 °C | 80.26 mm |
| December | -3.2 °C | 8 °C | 88.39 mm |
| Annual | 5.3 °C | 17.6 °C | 1164.57 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |