Hamilton, Virginia has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.8 °F (low) to 65.4 °F (high). Annual precipitation averages 42.9 Inches. Hamilton 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.7 °F | 42.0 °F | 3.03 in. |
| February | 25.4 °F | 45.2 °F | 2.37 in. |
| March | 31.9 °F | 53.8 °F | 3.63 in. |
| April | 41.6 °F | 65.8 °F | 3.45 in. |
| May | 51.5 °F | 74.3 °F | 4.54 in. |
| June | 60.2 °F | 82.5 °F | 4.09 in. |
| July | 65.0 °F | 87.2 °F | 4.06 in. |
| August | 63.0 °F | 85.5 °F | 3.25 in. |
| September | 56.2 °F | 78.8 °F | 4.57 in. |
| October | 44.3 °F | 67.6 °F | 3.43 in. |
| November | 34.7 °F | 55.9 °F | 2.99 in. |
| December | 27.5 °F | 45.9 °F | 3.5 in. |
| Annual | 43.8 °F | 65.4 °F | 42.91 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |