Orchard Grass Hills, Kentucky has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.8 °C (low) to 19.2 °C (high). Annual precipitation averages 1283.7 Millimeters. Orchard Grass Hills is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4 °C | 5.4 °C | 95.25 mm |
| February | -2.6 °C | 7.9 °C | 92.2 mm |
| March | 1.7 °C | 13.4 °C | 117.86 mm |
| April | 7.2 °C | 19.9 °C | 127.25 mm |
| May | 13 °C | 24.6 °C | 136.91 mm |
| June | 17.3 °C | 28.9 °C | 126.49 mm |
| July | 19.3 °C | 30.7 °C | 114.05 mm |
| August | 18.7 °C | 30.3 °C | 86.61 mm |
| September | 14.7 °C | 27.2 °C | 89.66 mm |
| October | 7.9 °C | 20.8 °C | 92.71 mm |
| November | 2.3 °C | 13.4 °C | 94.49 mm |
| December | -1.7 °C | 7.6 °C | 110.24 mm |
| Annual | 7.8 °C | 19.2 °C | 1283.72 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |