Butler, Tennessee has a Temperate Oceanic Climate climate (Köppen classification: Cfb). Average annual temperatures range from 6.4 °C (low) to 19 °C (high). Annual precipitation averages 1222 Millimeters. Butler 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 | -3.8 °C | 7.4 °C | 96.52 mm |
| February | -2.4 °C | 9.7 °C | 100.08 mm |
| March | 0.9 °C | 14.3 °C | 101.09 mm |
| April | 5.4 °C | 19.6 °C | 123.44 mm |
| May | 10.5 °C | 23.7 °C | 96.52 mm |
| June | 14.9 °C | 27.1 °C | 118.36 mm |
| July | 17 °C | 28.7 °C | 139.95 mm |
| August | 16.3 °C | 28.3 °C | 96.01 mm |
| September | 12.9 °C | 25.7 °C | 72.14 mm |
| October | 6.4 °C | 20.1 °C | 84.33 mm |
| November | 0.8 °C | 14.4 °C | 78.74 mm |
| December | -1.9 °C | 9.2 °C | 114.81 mm |
| Annual | 6.4 °C | 19 °C | 1221.99 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 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 | Moderate Drought |
| Köppen Climate Classification | Cfb - Temperate Oceanic Climate |