Williamsburg, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.4 °F (low) to 64.3 °F (high). Annual precipitation averages 46.1 Inches. Williamsburg is located in USDA Plant Hardiness Zone 6b. 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 | 22.9 °F | 39.3 °F | 3.11 in. |
| February | 25.5 °F | 43.6 °F | 3.07 in. |
| March | 32.8 °F | 53.1 °F | 4.39 in. |
| April | 42.8 °F | 65.2 °F | 4.79 in. |
| May | 53.3 °F | 74.1 °F | 4.75 in. |
| June | 62.0 °F | 82.6 °F | 4.64 in. |
| July | 65.3 °F | 85.6 °F | 4.7 in. |
| August | 63.7 °F | 84.8 °F | 3.95 in. |
| September | 56.2 °F | 79.0 °F | 3.05 in. |
| October | 44.9 °F | 67.3 °F | 2.88 in. |
| November | 34.6 °F | 54.1 °F | 3.27 in. |
| December | 28.2 °F | 43.4 °F | 3.48 in. |
| Annual | 44.4 °F | 64.3 °F | 46.08 in. |
| 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |