Glencoe, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.7 °C (low) to 16.8 °C (high). Annual precipitation averages 1105.1 Millimeters. Glencoe 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 | -5.9 °C | 3.1 °C | 87.63 mm |
| February | -5 °C | 4.8 °C | 70.1 mm |
| March | -1.2 °C | 10.1 °C | 91.44 mm |
| April | 4.4 °C | 17.3 °C | 95 mm |
| May | 10.1 °C | 22.5 °C | 109.98 mm |
| June | 15.1 °C | 26.8 °C | 117.09 mm |
| July | 17.4 °C | 28.7 °C | 105.66 mm |
| August | 16.4 °C | 28.2 °C | 93.47 mm |
| September | 12.6 °C | 24.9 °C | 94.23 mm |
| October | 6.3 °C | 18.3 °C | 79.25 mm |
| November | 0.9 °C | 11.4 °C | 77.22 mm |
| December | -2.9 °C | 5.5 °C | 84.07 mm |
| Annual | 5.7 °C | 16.8 °C | 1105.14 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |