Northwood, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.9 °F (low) to 59.6 °F (high). Annual precipitation averages 35.9 Inches. Northwood 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.8 °F | 32.9 °F | 2.48 in. |
| February | 20.4 °F | 35.9 °F | 2.36 in. |
| March | 28.2 °F | 45.5 °F | 2.67 in. |
| April | 39.3 °F | 58.4 °F | 3.76 in. |
| May | 51.0 °F | 70.2 °F | 3.44 in. |
| June | 61.1 °F | 80.2 °F | 3.51 in. |
| July | 64.7 °F | 84.2 °F | 3.41 in. |
| August | 62.5 °F | 82.0 °F | 3.17 in. |
| September | 55.3 °F | 75.9 °F | 2.87 in. |
| October | 43.5 °F | 63.1 °F | 2.94 in. |
| November | 33.4 °F | 49.4 °F | 2.85 in. |
| December | 24.9 °F | 37.9 °F | 2.41 in. |
| Annual | 41.9 °F | 59.6 °F | 35.87 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |