Yankee Lake, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 39.7 °F (low) to 60.6 °F (high). Annual precipitation averages 41.3 Inches. Yankee Lake is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.7 °F | 34.9 °F | 2.88 in. |
| February | 19.3 °F | 37.8 °F | 2.27 in. |
| March | 27.0 °F | 47.1 °F | 2.92 in. |
| April | 37.2 °F | 60.9 °F | 3.78 in. |
| May | 47.5 °F | 71.6 °F | 3.84 in. |
| June | 56.4 °F | 79.9 °F | 4.33 in. |
| July | 60.5 °F | 83.6 °F | 4.44 in. |
| August | 58.7 °F | 82.2 °F | 3.57 in. |
| September | 52.0 °F | 75.8 °F | 3.98 in. |
| October | 41.3 °F | 63.4 °F | 3.22 in. |
| November | 32.7 °F | 50.5 °F | 2.97 in. |
| December | 25.0 °F | 39.7 °F | 3.13 in. |
| Annual | 39.7 °F | 60.6 °F | 41.33 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |