Melrose, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 15.7 °C (high). Annual precipitation averages 956.6 Millimeters. Melrose is located in USDA Plant Hardiness Zone 6a. 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 | -8.1 °C | 0.3 °C | 61.72 mm |
| February | -7.1 °C | 2.1 °C | 55.12 mm |
| March | -2.4 °C | 8.1 °C | 65.02 mm |
| April | 3.2 °C | 15.6 °C | 90.93 mm |
| May | 9.7 °C | 22.1 °C | 111.76 mm |
| June | 15.3 °C | 27.1 °C | 104.39 mm |
| July | 17.1 °C | 29.2 °C | 100.33 mm |
| August | 15.8 °C | 28.1 °C | 89.15 mm |
| September | 11.7 °C | 24.9 °C | 77.22 mm |
| October | 5.6 °C | 17.7 °C | 69.09 mm |
| November | -0.1 °C | 9.7 °C | 72.14 mm |
| December | -4.8 °C | 3 °C | 59.69 mm |
| Annual | 4.7 °C | 15.7 °C | 956.56 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |