Glouster, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 17.5 °C (high). Annual precipitation averages 1086.6 Millimeters. Glouster 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 | -7.1 °C | 3.7 °C | 84.07 mm |
| February | -6.2 °C | 5.6 °C | 69.85 mm |
| March | -2.2 °C | 11.1 °C | 94.23 mm |
| April | 3.3 °C | 18.5 °C | 94.74 mm |
| May | 9.2 °C | 23.2 °C | 106.93 mm |
| June | 14.3 °C | 27.5 °C | 115.06 mm |
| July | 16.6 °C | 29.4 °C | 113.28 mm |
| August | 15.6 °C | 28.9 °C | 85.6 mm |
| September | 11.2 °C | 25.2 °C | 88.9 mm |
| October | 4.3 °C | 18.8 °C | 77.98 mm |
| November | -0.7 °C | 12.2 °C | 75.44 mm |
| December | -4 °C | 6.2 °C | 80.52 mm |
| Annual | 4.5 °C | 17.5 °C | 1086.6 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |