Orme, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.1 °C (low) to 20.9 °C (high). Annual precipitation averages 1679.2 Millimeters. Orme is located in USDA Plant Hardiness Zone 7b. 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 | -1.3 °C | 9 °C | 159.77 mm |
| February | 0.3 °C | 11.6 °C | 151.64 mm |
| March | 4 °C | 16.3 °C | 166.12 mm |
| April | 8.3 °C | 21.5 °C | 157.23 mm |
| May | 13.3 °C | 25.4 °C | 130.81 mm |
| June | 17.5 °C | 29.1 °C | 134.37 mm |
| July | 19.6 °C | 30.8 °C | 136.65 mm |
| August | 18.9 °C | 30.4 °C | 103.89 mm |
| September | 15.6 °C | 27.7 °C | 121.16 mm |
| October | 8.9 °C | 22 °C | 95.5 mm |
| November | 3.4 °C | 15.7 °C | 138.94 mm |
| December | 0.3 °C | 10.9 °C | 183.13 mm |
| Annual | 9.1 °C | 20.9 °C | 1679.21 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |