Glasgow, Kentucky has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.2 °C (low) to 20.2 °C (high). Annual precipitation averages 1375.9 Millimeters. Glasgow 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.1 °C | 7.1 °C | 103.12 mm |
| February | -1.6 °C | 9.6 °C | 107.7 mm |
| March | 2.3 °C | 14.6 °C | 126.24 mm |
| April | 7.5 °C | 20.7 °C | 125.48 mm |
| May | 13.1 °C | 25.3 °C | 141.99 mm |
| June | 17.4 °C | 29.7 °C | 130.56 mm |
| July | 19.4 °C | 31.2 °C | 129.79 mm |
| August | 18.7 °C | 30.8 °C | 95.25 mm |
| September | 14.7 °C | 27.8 °C | 101.6 mm |
| October | 8 °C | 21.7 °C | 93.47 mm |
| November | 2.4 °C | 14.5 °C | 98.04 mm |
| December | -0.9 °C | 9.1 °C | 122.68 mm |
| Annual | 8.2 °C | 20.2 °C | 1375.92 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 |