Gilbert, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.2 °C (low) to 19.8 °C (high). Annual precipitation averages 1209.6 Millimeters. Gilbert 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 | -3.9 °C | 6.9 °C | 93.73 mm |
| February | -2.4 °C | 9.4 °C | 86.36 mm |
| March | 0.8 °C | 14.2 °C | 108.2 mm |
| April | 5.9 °C | 21.2 °C | 115.32 mm |
| May | 11.6 °C | 25.1 °C | 118.11 mm |
| June | 16.3 °C | 28.8 °C | 121.41 mm |
| July | 18.7 °C | 30.6 °C | 132.59 mm |
| August | 18.1 °C | 29.8 °C | 93.22 mm |
| September | 14.3 °C | 27.1 °C | 79.5 mm |
| October | 7.3 °C | 20.9 °C | 78.99 mm |
| November | 1.2 °C | 14.3 °C | 79.25 mm |
| December | -1.7 °C | 8.8 °C | 102.87 mm |
| Annual | 7.2 °C | 19.8 °C | 1209.55 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |