Friendship, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.7 °C (low) to 21.1 °C (high). Annual precipitation averages 1375.2 Millimeters. Friendship is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 8.2 °C | 102.62 mm |
| February | 0.1 °C | 10.8 °C | 115.82 mm |
| March | 4.2 °C | 15.8 °C | 133.1 mm |
| April | 9.4 °C | 21.5 °C | 131.83 mm |
| May | 15.1 °C | 26.1 °C | 143.51 mm |
| June | 19.4 °C | 30.3 °C | 111.76 mm |
| July | 21.2 °C | 31.9 °C | 101.85 mm |
| August | 20.1 °C | 31.6 °C | 85.34 mm |
| September | 15.9 °C | 28.4 °C | 95.25 mm |
| October | 9.3 °C | 22.6 °C | 100.84 mm |
| November | 3.9 °C | 15.6 °C | 116.59 mm |
| December | 0 °C | 9.9 °C | 136.65 mm |
| Annual | 9.7 °C | 21.1 °C | 1375.16 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |