McGaheysville, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.3 °C (low) to 18.8 °C (high). Annual precipitation averages 1026.2 Millimeters. McGaheysville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.6 °C | 6.6 °C | 72.64 mm |
| February | -3.4 °C | 8.4 °C | 57.4 mm |
| March | -0.1 °C | 12.8 °C | 78.23 mm |
| April | 5.3 °C | 19.2 °C | 81.28 mm |
| May | 10.7 °C | 23.7 °C | 97.03 mm |
| June | 15.7 °C | 28.1 °C | 107.19 mm |
| July | 17.8 °C | 30.1 °C | 105.92 mm |
| August | 16.8 °C | 29.3 °C | 90.17 mm |
| September | 13.1 °C | 25.8 °C | 112.01 mm |
| October | 6.4 °C | 19.9 °C | 76.71 mm |
| November | 0.7 °C | 13.8 °C | 72.14 mm |
| December | -2.7 °C | 8.4 °C | 75.44 mm |
| Annual | 6.3 °C | 18.8 °C | 1026.16 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Cfa - Humid Subtropical Climate |