Tamassee, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 22 °C (high). Annual precipitation averages 1605.8 Millimeters. Tamassee is located in USDA Plant Hardiness Zone 8a. 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 | -1.3 °C | 11.3 °C | 149.1 mm |
| February | 0.1 °C | 13.4 °C | 128.27 mm |
| March | 3.6 °C | 17.6 °C | 140.97 mm |
| April | 7.9 °C | 22.6 °C | 123.7 mm |
| May | 12.9 °C | 26.6 °C | 117.6 mm |
| June | 17.6 °C | 29.8 °C | 134.11 mm |
| July | 19.5 °C | 31.7 °C | 129.79 mm |
| August | 19.2 °C | 30.8 °C | 161.29 mm |
| September | 15.8 °C | 27.9 °C | 128.78 mm |
| October | 8.8 °C | 22.6 °C | 115.32 mm |
| November | 3.3 °C | 17.3 °C | 120.65 mm |
| December | 0.5 °C | 12.7 °C | 156.21 mm |
| Annual | 9 °C | 22 °C | 1605.79 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 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |