Flat Rock, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.4 °F (low) to 68.6 °F (high). Annual precipitation averages 50.8 Inches. Flat Rock is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.4 °F | 48.0 °F | 5.56 in. |
| February | 28.8 °F | 51.8 °F | 4.65 in. |
| March | 34.2 °F | 58.6 °F | 5.21 in. |
| April | 43.0 °F | 67.6 °F | 5.41 in. |
| May | 51.7 °F | 74.5 °F | 4.99 in. |
| June | 59.3 °F | 80.5 °F | 5.22 in. |
| July | 63.3 °F | 83.6 °F | 5.66 in. |
| August | 62.5 °F | 82.3 °F | 5.83 in. |
| September | 56.0 °F | 77.3 °F | 5.1 in. |
| October | 44.2 °F | 68.4 °F | 4.87 in. |
| November | 33.9 °F | 58.9 °F | 4.95 in. |
| December | 29.4 °F | 50.9 °F | 5.74 in. |
| Annual | 44.4 °F | 66.9 °F | 63.19 in. |
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.8 °F | 48.1 °F | 3.99 in. |
| February | 28.6 °F | 51.8 °F | 3.19 in. |
| March | 34.8 °F | 59.5 °F | 4.27 in. |
| April | 43.5 °F | 69.5 °F | 4.33 in. |
| May | 52.9 °F | 76.7 °F | 4.69 in. |
| June | 61.3 °F | 83.8 °F | 4.82 in. |
| July | 65.5 °F | 87.0 °F | 5.22 in. |
| August | 64.2 °F | 85.6 °F | 4.9 in. |
| September | 57.6 °F | 79.9 °F | 4.33 in. |
| October | 45.2 °F | 70.4 °F | 3.46 in. |
| November | 34.7 °F | 59.9 °F | 3.39 in. |
| December | 29.5 °F | 50.9 °F | 4.21 in. |
| Annual | 45.4 °F | 68.6 °F | 50.8 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |