Brodhead, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.4 °C (low) to 19.2 °C (high). Annual precipitation averages 1264.9 Millimeters. Brodhead is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.9 °C | 6.1 °C | 97.79 mm |
| February | -2.3 °C | 8.6 °C | 93.98 mm |
| March | 1.4 °C | 13.5 °C | 116.08 mm |
| April | 6.7 °C | 20 °C | 116.59 mm |
| May | 12.3 °C | 24.3 °C | 128.27 mm |
| June | 16.8 °C | 28.5 °C | 131.57 mm |
| July | 18.9 °C | 30.1 °C | 122.17 mm |
| August | 17.7 °C | 30 °C | 88.9 mm |
| September | 13.8 °C | 27 °C | 91.19 mm |
| October | 7.8 °C | 20.8 °C | 84.58 mm |
| November | 1.7 °C | 13.7 °C | 84.33 mm |
| December | -1.7 °C | 8 °C | 109.47 mm |
| Annual | 7.4 °C | 19.2 °C | 1264.92 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |