Norbourne Estates, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.6 °F (low) to 67.5 °F (high). Annual precipitation averages 49.9 Inches. Norbourne Estates is located in USDA Plant Hardiness Zone 7a. 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 | 26.2 °F | 42.8 °F | 3.69 in. |
| February | 28.9 °F | 47.3 °F | 3.62 in. |
| March | 36.5 °F | 57.1 °F | 4.63 in. |
| April | 46.7 °F | 68.8 °F | 4.96 in. |
| May | 56.8 °F | 77.2 °F | 5.15 in. |
| June | 64.8 °F | 84.9 °F | 4.75 in. |
| July | 68.4 °F | 88.1 °F | 4.36 in. |
| August | 67.3 °F | 87.4 °F | 3.38 in. |
| September | 60.0 °F | 81.8 °F | 3.68 in. |
| October | 48.0 °F | 70.4 °F | 3.6 in. |
| November | 37.7 °F | 57.1 °F | 3.68 in. |
| December | 30.4 °F | 46.5 °F | 4.42 in. |
| Annual | 47.6 °F | 67.5 °F | 49.92 in. |
| 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |