Tallmadge, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 41.2 °F (low) to 59.2 °F (high). Annual precipitation averages 39.6 Inches. Tallmadge is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.2 °F | 33.6 °F | 2.74 in. |
| February | 20.3 °F | 36.3 °F | 2.16 in. |
| March | 28.1 °F | 45.7 °F | 3.07 in. |
| April | 39.1 °F | 59.3 °F | 3.61 in. |
| May | 49.5 °F | 70.1 °F | 3.91 in. |
| June | 58.8 °F | 78.5 °F | 4.09 in. |
| July | 62.5 °F | 82.5 °F | 3.97 in. |
| August | 60.8 °F | 81.0 °F | 3.54 in. |
| September | 53.8 °F | 74.3 °F | 3.43 in. |
| October | 43.1 °F | 61.9 °F | 3.24 in. |
| November | 33.4 °F | 49.3 °F | 2.94 in. |
| December | 25.3 °F | 38.3 °F | 2.85 in. |
| Annual | 41.2 °F | 59.2 °F | 39.55 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |