East Flat Rock, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.9 °C (low) to 19.4 °C (high). Annual precipitation averages 1575.3 Millimeters. East Flat Rock is located in USDA Plant Hardiness Zone 7b. 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 | -3.1 °C | 8.9 °C | 143.76 mm |
| February | -1.8 °C | 11 °C | 116.08 mm |
| March | 1.2 °C | 14.8 °C | 125.73 mm |
| April | 6.2 °C | 19.8 °C | 131.83 mm |
| May | 10.9 °C | 23.7 °C | 126.49 mm |
| June | 15.1 °C | 26.9 °C | 126.49 mm |
| July | 17.4 °C | 28.7 °C | 141.22 mm |
| August | 16.9 °C | 27.9 °C | 149.35 mm |
| September | 13.3 °C | 25.2 °C | 126.24 mm |
| October | 6.8 °C | 20.2 °C | 123.19 mm |
| November | 1.1 °C | 14.9 °C | 120.65 mm |
| December | -1.4 °C | 10.5 °C | 144.27 mm |
| Annual | 6.9 °C | 19.4 °C | 1575.3 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 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |