Crestwood, Kentucky has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.6 °C (low) to 19 °C (high). Annual precipitation averages 1289.3 Millimeters. Crestwood is located in USDA Plant Hardiness Zone 6b. 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 | -4.2 °C | 5.2 °C | 95 mm |
| February | -2.8 °C | 7.8 °C | 91.95 mm |
| March | 1.4 °C | 13.2 °C | 116.59 mm |
| April | 7 °C | 19.7 °C | 127.51 mm |
| May | 12.8 °C | 24.3 °C | 140.21 mm |
| June | 17.1 °C | 28.9 °C | 126.49 mm |
| July | 19.1 °C | 30.5 °C | 116.84 mm |
| August | 18.5 °C | 30.1 °C | 87.38 mm |
| September | 14.4 °C | 26.9 °C | 89.66 mm |
| October | 7.7 °C | 20.7 °C | 93.22 mm |
| November | 2.1 °C | 13.3 °C | 94.23 mm |
| December | -1.9 °C | 7.3 °C | 110.24 mm |
| Annual | 7.6 °C | 19 °C | 1289.32 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |