Chatmoss, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.6 °F (low) to 69 °F (high). Annual precipitation averages 46.9 Inches. Chatmoss is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.5 °F | 48.2 °F | 3.76 in. |
| February | 28.3 °F | 51.9 °F | 2.92 in. |
| March | 34.8 °F | 59.9 °F | 4.11 in. |
| April | 43.8 °F | 70.1 °F | 3.64 in. |
| May | 53.3 °F | 77.2 °F | 4.41 in. |
| June | 61.7 °F | 84.4 °F | 4.48 in. |
| July | 66.2 °F | 87.8 °F | 4.11 in. |
| August | 64.8 °F | 86.1 °F | 4.12 in. |
| September | 58.0 °F | 79.9 °F | 5.14 in. |
| October | 45.4 °F | 70.7 °F | 3.52 in. |
| November | 34.6 °F | 60.2 °F | 3.12 in. |
| December | 29.2 °F | 51.1 °F | 3.55 in. |
| Annual | 45.6 °F | 69 °F | 46.88 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |