Highland Acres, Delaware has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.3 °F (low) to 65.2 °F (high). Annual precipitation averages 45.9 Inches. Highland Acres 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.6 °F | 43.2 °F | 3.4 in. |
| February | 26.8 °F | 45.3 °F | 3.01 in. |
| March | 33.8 °F | 52.9 °F | 4.17 in. |
| April | 43.9 °F | 64.0 °F | 3.59 in. |
| May | 53.6 °F | 72.9 °F | 3.83 in. |
| June | 62.9 °F | 81.7 °F | 4.14 in. |
| July | 68.1 °F | 86.3 °F | 4.08 in. |
| August | 66.1 °F | 84.5 °F | 4.78 in. |
| September | 59.6 °F | 78.6 °F | 3.93 in. |
| October | 47.9 °F | 67.7 °F | 3.89 in. |
| November | 37.3 °F | 57.1 °F | 3.19 in. |
| December | 30.5 °F | 47.7 °F | 3.91 in. |
| Annual | 46.3 °F | 65.2 °F | 45.92 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |