Barlow, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.9 °C (low) to 20.1 °C (high). Annual precipitation averages 1286.5 Millimeters. Barlow is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3 °C | 6.3 °C | 99.82 mm |
| February | -1.3 °C | 9.1 °C | 97.79 mm |
| March | 3.1 °C | 14.4 °C | 124.21 mm |
| April | 8.6 °C | 20.8 °C | 133.35 mm |
| May | 14.2 °C | 25.6 °C | 134.11 mm |
| June | 18.9 °C | 30.1 °C | 109.98 mm |
| July | 20.8 °C | 31.7 °C | 102.36 mm |
| August | 19.5 °C | 31.1 °C | 74.17 mm |
| September | 15.1 °C | 27.8 °C | 88.14 mm |
| October | 8.6 °C | 21.8 °C | 100.08 mm |
| November | 2.9 °C | 14.3 °C | 109.73 mm |
| December | -1.1 °C | 8.3 °C | 112.78 mm |
| Annual | 8.9 °C | 20.1 °C | 1286.52 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |